Standard Lemma guide

AA

adj · name · noun · pron · verb · 126 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈɑː.ɑː/
  • Received-Pronunciation: [ˈɑː.ʔɑː]
  • Received-Pronunciation: äʹä
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /ˈɑ.ɑ/
  • General-American: [ˈɑ.ʔɑ]

1

adj

Meaning 1

Initialism of anti-aircraft or anti-air.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: aeronautics, aerospace, aviation, business, engineering, government, military, natural-sciences, physical-sciences, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Initialism of air-to-air.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: aeronautics, aerospace, aviation, business, engineering, government, military, natural-sciences, physical-sciences, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Initialism of atlantoaxial.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: anatomy, medicine, sciences

Examples

  • AA joint; AA instability

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Initialism of arterioarterial.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: anatomy, medicine, sciences

Examples

  • AA anastomosis

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adj

Meaning 5

Initialism of Afro-Asiatic.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: human-sciences, linguistics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

adj

Meaning 6

Initialism of Austroasiatic.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

Topics: human-sciences, linguistics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

adj

Meaning 7

Initialism of arctic-alpine.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

adj

Meaning 8

Initialism of always afloat.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

adj

Meaning 9

Abbreviation of ana (“of each, equal parts”).

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

name

Meaning 10

Initialism of Alcoholics Anonymous: a self-supporting organization of alcoholic people.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

name

Meaning 11

Initialism of Academy Awards: a recognition of excellence in cinematic achievements, given annually by the Academy of Motion Picture Arts and Sciences.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

name

Meaning 12

Initialism of Addicts Anonymous.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

name

Meaning 13

Initialism of Al Ain.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

name

Meaning 14

Initialism of American Airlines: a major American airline headquartered in Fort Worth, Texas.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

15

name

Meaning 15

Initialism of Aerolíneas Argentinas.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

16

name

Meaning 16

Initialism of Ansett Australia or Ansett Airways.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

17

name

Meaning 17

Initialism of Air Almanac, a publication.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

18

name

Meaning 18

Initialism of American Anthropologist: the flagship journal of the American Anthropological Association, founded in 1888.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

19

name

Meaning 19

Initialism of Acta Astronautica: a scientific journal founded in 1955, covering fields related to the peaceful scientific exploration of space.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

20

name

Meaning 20

Initialism of Aluminum America, a corporation.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

21

name

Meaning 21

Initialism of The Aluminum Association: a trade association for the aluminum production, fabrication and recycling industries.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

22

name

Meaning 22

Double-A: the second-highest level of play in Minor League Baseball after Triple-A (AAA).

Definition source: English Wiktionary via Wiktextract

Usage: US

Topics: ball-games, baseball, games, hobbies, lifestyle, sports

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

23

name

Meaning 23

Initialism of American Association: an American minor league baseball league from 1902 to 1962 and 1969 to 1997.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, historical, initialism

Topics: ball-games, baseball, games, hobbies, lifestyle, sports

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

24

name

Meaning 24

Initialism of The Automobile Association: a British motoring association founded in 1905.

Definition source: English Wiktionary via Wiktextract

Usage: UK, abbreviation, alt-of, initialism

Topics: automotive, transport, vehicles

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

25

name

Meaning 25

Initialism of Alzheimer's Association: an American volunteer health organization focusing on care, support and research for Alzheimer's disease.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

26

name

Meaning 26

Initialism of Amalgamated Association of Iron and Steel Workers.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, historical, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

27

name

Meaning 27

Initialism of Ann Arbor Railroad.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, initialism

Topics: rail-transport, railways, transport

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

28

name

Meaning 28

Initialism of Arlington Annex.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

29

name

Meaning 29

USPS military code of Armed Forces – Americas.

Definition source: English Wiktionary via Wiktextract

Usage: US

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

30

name

Meaning 30

Initialism of Army Act.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

31

name

Meaning 31

Initialism of aviatsionnaya Armiya.

Definition source: English Wiktionary via Wiktextract

Usage: Russia, abbreviation, alt-of, dated, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

32

name

Meaning 32

Initialism of Antiproton Accumulator: an infrastructure connected to the Proton–Antiproton Collider at CERN.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

33

name

Meaning 33

Alternative form of A∴A∴.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, alternative

Topics: human-sciences, mysticism, occult, philosophy, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

34

name

Meaning 34

Initialism of Anna's Archive.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

35

name

Meaning 35

Abbreviation of Alcoa.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of

Topics: business, finance, stock-ticker-symbol

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

36

name

Meaning 36

Several waterways in Europe.

A river in northern France, flowing 93 km from near Bourthes, Pas-de-Calais department into the North Sea near Gravelines, Nord department.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

37

name

Meaning 37

Several waterways in Europe.

A small river in the Netherlands, flowing 72 km from near Nederweert, Limburg into the Dieze at 's-Hertogenbosch, North Brabant.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

38

name

Meaning 38

Several waterways in Europe.

A tributary of the Möhne river in North Rhine-Westphalia, Germany, part of the Rhine basin.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

39

name

Meaning 39

Several waterways in Europe.

A tributary of the Nether river in North Rhine-Westphalia, Germany, part of the Weser basin.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

40

name

Meaning 40

Several waterways in Europe.

A tributary of the Werre river in North Rhine-Westphalia, Germany, part of the Weser basin.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

41

name

Meaning 41

A village in Ida-Viru County, northern Estonia, on the Gulf of Finland.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

42

name

Meaning 42

A surname from Norwegian.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

43

noun

Meaning 43

A member of Alcoholics Anonymous.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

44

noun

Meaning 44

An AA battery (energy-storage device).

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

45

noun

Meaning 45

Initialism of affirmative action.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

46

noun

Meaning 46

Initialism of air armament.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

47

noun

Meaning 47

Initialism of air attaché.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

48

noun

Meaning 48

Initialism of aircraft apprentice.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

49

noun

Meaning 49

Initialism of aircraft artificer.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

50

noun

Meaning 50

Initialism of absolute altitude.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

51

noun

Meaning 51

Initialism of anti-aircraft.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

52

noun

Meaning 52

Initialism of avenue of approach.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

53

noun

Meaning 53

Initialism of assembly area.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

54

noun

Meaning 54

Initialism of airman apprentice.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

55

noun

Meaning 55

Initialism of absolute alcohol.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

56

noun

Meaning 56

Initialism of achievement age.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: human-sciences, psychology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

57

noun

Meaning 57

Initialism of acting appointment.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

58

noun

Meaning 58

Initialism of adoption agency.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

59

noun

Meaning 59

Initialism of armament artificer.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

60

noun

Meaning 60

Initialism of athletic association.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

61

noun

Meaning 61

Initialism of author's alteration.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

62

noun

Meaning 62

Initialism of aviation annex.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

63

noun

Meaning 63

Initialism of angular aperture.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: engineering, natural-sciences, optics, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

64

noun

Meaning 64

Initialism of amino acid.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

65

noun

Meaning 65

Initialism of aminoacyl.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

66

noun

Meaning 66

Initialism of acetic acid.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

67

noun

Meaning 67

Initialism of acrylic acid.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

68

noun

Meaning 68

Initialism of amyloid A.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, medicine, natural-sciences, organic-chemistry, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

69

noun

Meaning 69

Initialism of arachidonic acid.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

70

noun

Meaning 70

Initialism of ascorbic acid.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

71

noun

Meaning 71

Initialism of asymmetric aminohydroxylation.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

72

noun

Meaning 72

Initialism of acetaldehyde adduct.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

73

noun

Meaning 73

Initialism of adrenal androgen.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

74

noun

Meaning 74

Initialism of antiandrogen.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: biochemistry, biology, chemistry, medicine, microbiology, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

75

noun

Meaning 75

Initialism of antioxidant activity.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

76

noun

Meaning 76

Initialism of atomic absorption.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

77

noun

Meaning 77

Initialism of activated alumina.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: chemistry, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

78

noun

Meaning 78

Initialism of anti-antibody.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: immunology, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

79

noun

Meaning 79

Initialism of ascending aorta.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

80

noun

Meaning 80

Initialism of abdominal aorta.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

81

noun

Meaning 81

Initialism of aortic arch.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

82

noun

Meaning 82

Initialism of acute appendicitis.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

83

noun

Meaning 83

Initialism of allergic asthma.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

84

noun

Meaning 84

Initialism of alopecia areata.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

85

noun

Meaning 85

Initialism of anaplastic astrocytoma.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

86

noun

Meaning 86

Initialism of anastomotic aneurysm.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

87

noun

Meaning 87

Initialism of aortic aneurysm.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

88

noun

Meaning 88

Initialism of aplastic anemia.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

89

noun

Meaning 89

Initialism of arterial aneurysm.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

90

noun

Meaning 90

Initialism of arytenoid adduction.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

91

noun

Meaning 91

Initialism of anesthesiologist assistant.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: government, healthcare

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

92

noun

Meaning 92

Initialism of anesthesia assistant.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: government, healthcare

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

93

noun

Meaning 93

Initialism of antialiasing.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: computer-graphics, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

94

noun

Meaning 94

Initialism of African-American.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

95

noun

Meaning 95

Initialism of Asian-African.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

96

noun

Meaning 96

Initialism of Asian American.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

97

noun

Meaning 97

Initialism of administrative assistant.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, countable, initialism, uncountable

Topics: government, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

98

noun

Meaning 98

Initialism of associate administrator.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

99

noun

Meaning 99

Initialism of assistant adjutant.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

100

noun

Meaning 100

Initialism of academic adviser.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

101

noun

Meaning 101

Initialism of Associate in Arts or Associate of Arts.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: education

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

102

noun

Meaning 102

Initialism of appropriate authority.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

103

noun

Meaning 103

Initialism of appropriate adult.

Definition source: English Wiktionary via Wiktextract

Usage: British, English, abbreviation, alt-of, countable, initialism, uncountable

Topics: law

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

104

noun

Meaning 104

Initialism of account aggregator.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: business, finance

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

105

noun

Meaning 105

Initialism of appointed actuary.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: business, insurance

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

106

noun

Meaning 106

Initialism of approximate absolute.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

107

noun

Meaning 107

Initialism of arithmetic average.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: mathematics, sciences, statistics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

108

noun

Meaning 108

Initialism of Association Agreement: a treaty between the European Union, its member states and a non-EU country that creates a framework for cooperation between them.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: government, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

109

noun

Meaning 109

Initialism of against actual.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: business, finance

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

110

noun

Meaning 110

Initialism of approach anxiety.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: lifestyle, seduction-community, sexuality

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

111

noun

Meaning 111

Initialism of agent assistant; an assistant of a real estate agent.

Definition source: English Wiktionary via Wiktextract

Usage: Hong-Kong, abbreviation, alt-of, countable, initialism, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

112

noun

Meaning 112

Initialism of annual allowance.

Definition source: English Wiktionary via Wiktextract

Usage: UK, abbreviation, alt-of, countable, initialism, uncountable

Qualifier: pensions

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

113

noun

Meaning 113

Abbreviation of all-around.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, uncountable

Topics: gymnastics, hobbies, lifestyle, sports

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

114

noun

Meaning 114

Initialism of average audience.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, initialism, uncountable

Topics: broadcasting, media

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

115

noun

Meaning 115

A form of lava flow associated with Hawaiian-type volcanoes, consisting of basaltic rock, usually dark-colored with a jagged and loose, clinkery surface. Compare pahoehoe.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: geography, geology, natural-sciences, volcanology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

116

noun

Meaning 116

Initialism of acting age.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

117

noun

Meaning 117

Initialism of alveolar-arterial.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

118

noun

Meaning 118

Initialism of aminoacetone.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

119

noun

Meaning 119

Initialism of armature accelerator.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

120

noun

Meaning 120

Abbreviation of adjectives.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, plural, plural-only

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

121

noun

Meaning 121

Abbreviation of arteries.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, plural, plural-only

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

122

pron

Meaning 122

I.

Definition source: English Wiktionary via Wiktextract

Usage: Northumbria, personal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

123

verb

Meaning 123

Initialism of antialias.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism, transitive

Topics: computer-graphics, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

124

noun

Meaning 124

an associate degree in arts

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Associate in Arts

Antonyms: none provided

Broader terms: associate degree, associate

125

noun

Meaning 125

an international organization that provides a support group for persons trying to overcome alcoholism

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Alcoholics Anonymous

Antonyms: none provided

Broader terms: nongovernmental organization, NGO

126

noun

Meaning 126

a dry form of lava resembling clinkers

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: lava

History

Etymology

Abbreviations.

Abbreviation.

Contraction.

The river names are ostensibly from Proto-West Germanic *ahu (“river”).

Etymology tree Proto-Polynesian *kaha Proto-Polynesian *kakaha Hawaiian ʻaʻābor. English aa Borrowed from Hawaiian ʻaʻā.

Compare pp.

Across languages

Translations

21 source translations are retained for this English entry.

  • Czech: PL — anti-aircraft
  • Finnish: IT — anti-aircraft
  • Finnish: it — anti-aircraft
  • Polish: PL — anti-aircraft
  • French: AA — Alcoholics Anonymous
  • German: AA — Alcoholics Anonymous
  • Korean: AA — Alcoholics Anonymous
  • Polish: AA — Alcoholics Anonymous
  • Afrikaans: aälawa — a form of lava flow associated with Hawaiian-type volcanoes
  • Danish: apalhraun — a form of lava flow associated with Hawaiian-type volcanoes
  • Dutch: scherpe lava — a form of lava flow associated with Hawaiian-type volcanoes
  • Estonian: aa-laava — a form of lava flow associated with Hawaiian-type volcanoes
  • Faroese: bøklalava — a form of lava flow associated with Hawaiian-type volcanoes
  • Finnish: aa-laava — a form of lava flow associated with Hawaiian-type volcanoes
  • German: Aa-Lava — a form of lava flow associated with Hawaiian-type volcanoes
  • German: Brockenlava — a form of lava flow associated with Hawaiian-type volcanoes
  • Hawaiian: ʻaʻā — a form of lava flow associated with Hawaiian-type volcanoes
  • Icelandic: apalhraun — a form of lava flow associated with Hawaiian-type volcanoes
  • Irish: aa — a form of lava flow associated with Hawaiian-type volcanoes
  • Italian: àa — a form of lava flow associated with Hawaiian-type volcanoes
  • Korean: 아아 (aa) — a form of lava flow associated with Hawaiian-type volcanoes