Standard Lemma guide

delta

name · noun · verb · 39 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.

  • /ˈdɛltə/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ɛltə
  • [ˈdɛɫtə]
  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: D EH1 L T AH0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

name

Meaning 1

A state of Nigeria in the South South geopolitical zone. Capital: Asaba. Largest city: Warri.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

name

Meaning 2

A municipality in Central Macedonia, Greece.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

name

Meaning 3

A municipality of Minas Gerais, Brazil.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

name

Meaning 4

A municipality of British Columbia, Canada.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

name

Meaning 5

A village in Ontario, Canada.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

name

Meaning 6

A number of places in the United States:

A census-designated place and unincorporated community in Clay County, Alabama.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

name

Meaning 7

A number of places in the United States:

A city and home rule municipality, the county seat of Delta County, Colorado.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

name

Meaning 8

A number of places in the United States:

An unincorporated community in Saline County, Illinois.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

name

Meaning 9

A number of places in the United States:

A city in Keokuk County, Iowa.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

name

Meaning 10

A number of places in the United States:

An unincorporated community in Wayne County, Kentucky.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

name

Meaning 11

A number of places in the United States:

A village in Madison Parish, Louisiana.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

name

Meaning 12

A number of places in the United States:

A city in Cape Girardeau County, Missouri.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

name

Meaning 13

A number of places in the United States:

An unincorporated community in Stokes County, North Carolina.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

name

Meaning 14

A number of places in the United States:

A village in Fulton County, Ohio.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

15

name

Meaning 15

A number of places in the United States:

A borough in York County, Pennsylvania.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

16

name

Meaning 16

A number of places in the United States:

A city in Millard County, Utah.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

17

name

Meaning 17

A number of places in the United States:

A town and unincorporated community in Bayfield County, Wisconsin.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

18

noun

Meaning 18

The fourth letter of the modern Greek alphabet Δ, δ.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

19

noun

Meaning 19

A landform at the mouth of a river where it empties into a body of water.

Definition source: English Wiktionary via Wiktextract

Examples

  • Nile Delta

Meaning relationships

Synonyms: none provided

Antonyms: none provided

20

noun

Meaning 20

Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of

Qualifier: international standards

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

21

noun

Meaning 21

The symbol Δ; A change in a quantity, likely from "d" for "difference".

Definition source: English Wiktionary via Wiktextract

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

Examples

  • ΔV - "delta vee"(change in velocity, used in rocketry and orbital mechanics)

Meaning relationships

Synonyms: none provided

Antonyms: none provided

22

noun

Meaning 22

The rate of change in an option value with respect to the underlying asset's price.

Definition source: English Wiktionary via Wiktextract

Topics: business, finance

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

23

noun

Meaning 23

A value in delta notation indicating the relative abundances of isotopes.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

24

noun

Meaning 24

The set of differences between two versions of a file.

Definition source: English Wiktionary via Wiktextract

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

Examples

  • When you update the file, the system will only save the deltas.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

25

noun

Meaning 25

A small but noticeable effect. Compare epsilon.

Definition source: English Wiktionary via Wiktextract

Usage: informal

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

Examples

  • This will slow the main code path down, but only by delta.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

26

noun

Meaning 26

The angle subtended at the center of a circular arc.

Definition source: English Wiktionary via Wiktextract

Topics: geography, natural-sciences, surveying

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

27

noun

Meaning 27

A type of cargo bike that has one wheel in front and two in back.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

28

noun

Meaning 28

The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.

Definition source: English Wiktionary via Wiktextract

Usage: attributive, often

Topics: business, electrical-engineering, electricity, electromagnetism, energy, engineering, natural-sciences, physical-sciences, physics

Examples

  • delta winding; delta connection; delta current

Meaning relationships

Synonyms: none provided

Antonyms: none provided

29

noun

Meaning 29

A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.

Definition source: English Wiktionary via Wiktextract

Usage: Space-Force, US

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

30

noun

Meaning 30

a star that is usually the fourth brightest of a constellation.

Definition source: English Wiktionary via Wiktextract

Topics: astronomy, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

31

noun

Meaning 31

one of four baryons consisting of up and down quarks with a combined spin of 3/2: Δ++ (uuu), Δ+ (uud), Δ0 (udd), or Δ− (ddd)

Definition source: English Wiktionary via Wiktextract

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

32

noun

Meaning 32

Ellipsis of delta variant (variant of the SARS-CoV-2 virus).

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, ellipsis

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

33

noun

Meaning 33

The Delta variant of COVID-19.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

34

noun

Meaning 34

Acronym of Diploma in Teaching English to Speakers of Other Languages, an advanced qualification to teach English, higher than the CELTA, accredited by the University of Cambridge.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, acronym, alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

35

verb

Meaning 35

To calculate the differences between the characters in an enciphered text and the characters a fixed number of positions previous.

Definition source: English Wiktionary via Wiktextract

Topics: computing, cryptography, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

36

verb

Meaning 36

To compare two versions of the same file in order to determine where they differ (where a programmer has made edits).

Definition source: English Wiktionary via Wiktextract

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

37

noun

Meaning 37

the 4th letter of the Greek alphabet

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: letter, letter of the alphabet, alphabetic character

38

noun

Meaning 38

a low triangular area of alluvial deposits where a river divides before entering a larger body of water

Definition source: Princeton WordNet 3.0

Examples

  • the Mississippi River delta
  • the Nile delta

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: alluvial sediment, alluvial deposit, alluvium, alluvion, geological formation, formation

39

noun

Meaning 39

an object shaped like an equilateral triangle

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: equilateral triangle, equiangular triangle

History

Etymology

From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet. * (river): from the triangular shape of the majuscule Greek letter delta Δ * (USSF): from the delta wing, symbol of the USSF, a triangular wing, shaped like the majuscule Greek letter delta Δ

Across languages

Translations

128 source translations are retained for this English entry.

  • Arabic: دِلْتَا (diltā) — fourth letter of modern Greek alphabet
  • Arabic: دِلْتَا (deltā) — fourth letter of modern Greek alphabet
  • Asturian: delta — fourth letter of modern Greek alphabet
  • Bulgarian: де́лта (délta) — fourth letter of modern Greek alphabet
  • Catalan: delta — fourth letter of modern Greek alphabet
  • Chinese Mandarin: 德爾塔 /德尔塔 (dé'ěrtǎ) — fourth letter of modern Greek alphabet
  • Czech: delta — fourth letter of modern Greek alphabet
  • Danish: delta — fourth letter of modern Greek alphabet
  • Dutch: delta — fourth letter of modern Greek alphabet
  • Esperanto: delto — fourth letter of modern Greek alphabet
  • Finnish: delta — fourth letter of modern Greek alphabet
  • French: delta — fourth letter of modern Greek alphabet
  • Galician: delta — fourth letter of modern Greek alphabet
  • German: Delta — fourth letter of modern Greek alphabet
  • Greek: δέλτα (délta) — fourth letter of modern Greek alphabet
  • Ancient Greek: δέλτα (délta) — fourth letter of modern Greek alphabet
  • Hebrew: דֶּלְתָּא (délta) — fourth letter of modern Greek alphabet
  • Hindi: डेल्टा (ḍelṭā) — fourth letter of modern Greek alphabet
  • Hungarian: delta — fourth letter of modern Greek alphabet
  • Icelandic: delta — fourth letter of modern Greek alphabet
  • Interlingua: delta — fourth letter of modern Greek alphabet
  • Japanese: デルタ (deruta) — fourth letter of modern Greek alphabet
  • Korean: 델타 (delta) — fourth letter of modern Greek alphabet
  • Latvian: delta — fourth letter of modern Greek alphabet
  • Malay: delta — fourth letter of modern Greek alphabet
  • Māori: tēira — fourth letter of modern Greek alphabet
  • Marathi: डेल्टा (ḍelṭā) — fourth letter of modern Greek alphabet
  • Norwegian Bokmål: delta — fourth letter of modern Greek alphabet
  • Norwegian Nynorsk: delta — fourth letter of modern Greek alphabet
  • Polish: delta — fourth letter of modern Greek alphabet
  • Portuguese: delta — fourth letter of modern Greek alphabet
  • Romanian: delta — fourth letter of modern Greek alphabet
  • Russian: де́льта (dɛ́lʹta) — fourth letter of modern Greek alphabet
  • Slovene: delta — fourth letter of modern Greek alphabet
  • Spanish: delta — fourth letter of modern Greek alphabet
  • Swedish: delta — fourth letter of modern Greek alphabet
  • Tagalog: delta — fourth letter of modern Greek alphabet
  • Thai: เดลตา (deel-dtâa) — fourth letter of modern Greek alphabet
  • Turkish: delta — fourth letter of modern Greek alphabet
  • Albanian: delta — landform at the mouth of a river
  • Arabic: دِلْتَا (diltā) — landform at the mouth of a river
  • Armenian: դելտա (delta) — landform at the mouth of a river
  • Asturian: delta — landform at the mouth of a river
  • Azerbaijani: delta — landform at the mouth of a river
  • Basque: delta — landform at the mouth of a river
  • Belarusian: дэ́льта (délʹta) — landform at the mouth of a river
  • Central Bikol: sabang — landform at the mouth of a river
  • Bulgarian: де́лта (délta) — landform at the mouth of a river
  • Catalan: delta — landform at the mouth of a river
  • Cherokee: ᏧᏩᏓᎶᎣᏒᎯ (tsuwadaloosvhi) — landform at the mouth of a river
  • Chinese Mandarin: 三角洲 (sānjiǎozhōu) — landform at the mouth of a river
  • Czech: delta — landform at the mouth of a river
  • Danish: delta — landform at the mouth of a river
  • Dutch: delta — landform at the mouth of a river
  • Esperanto: delto — landform at the mouth of a river
  • Estonian: delta — landform at the mouth of a river
  • Finnish: suisto — landform at the mouth of a river
  • French: delta — landform at the mouth of a river
  • West-Frisian: delta — landform at the mouth of a river
  • Galician: delta — landform at the mouth of a river
  • Georgian: დელტა (delṭa) — landform at the mouth of a river
  • German: Delta — landform at the mouth of a river
  • Greek: δέλτα (délta) — landform at the mouth of a river
  • Ancient Greek: δέλτα (délta) — landform at the mouth of a river
  • Gujarati: મુખત્રિકોણ (mukhatrikoṇ) — landform at the mouth of a river
  • Hebrew: דלתה (delta) — landform at the mouth of a river
  • Hindi: मुखत्रिकोण (mukhatrikoṇ) — landform at the mouth of a river
  • Hindi: त्रिभुज (tribhuj) — landform at the mouth of a river
  • Hindi: तिकोन (tikon) — landform at the mouth of a river
  • Hungarian: deltatorkolat — landform at the mouth of a river
  • Hungarian: delta — landform at the mouth of a river
  • Indonesian: kuala — landform at the mouth of a river
  • Japanese: 三角州 (sankakusu) — landform at the mouth of a river
  • Kazakh: атырау (atyrau) — landform at the mouth of a river
  • Korean: 삼각주 (samgakju) — landform at the mouth of a river
  • Latvian: delta — landform at the mouth of a river
  • Lithuanian: delta — landform at the mouth of a river
  • Macedonian: делта (delta) — landform at the mouth of a river
  • Māori: pūwaiwaha — landform at the mouth of a river
  • Norwegian Bokmål: delta — landform at the mouth of a river
  • Norwegian Nynorsk: delta — landform at the mouth of a river
  • Persian: دلتا (dêlta) — landform at the mouth of a river
  • Polish: delta — landform at the mouth of a river
  • Portuguese: delta — landform at the mouth of a river
  • Romanian: deltă — landform at the mouth of a river
  • Russian: де́льта (dɛ́lʹta) — landform at the mouth of a river
  • Serbo-Croatian: делта — landform at the mouth of a river
  • Serbo-Croatian: delta — landform at the mouth of a river
  • Sindhi: ٽِڪور (ṭikor) — landform at the mouth of a river
  • Slovak: delta — landform at the mouth of a river
  • Slovene: delta — landform at the mouth of a river
  • Spanish: delta — landform at the mouth of a river
  • Swedish: delta — landform at the mouth of a river
  • Tagalog: delta — landform at the mouth of a river
  • Tagalog: sabangan — landform at the mouth of a river
  • Thai: ดินดอนสามเหลี่ยม (din-dɔɔn-sǎam-lìiam) — landform at the mouth of a river
  • Thai: สามเหลี่ยมปากแม่น้ํา (sǎam-lìiam-bpàak-mɛ̂ɛ-náam) — landform at the mouth of a river
  • Thai: ดินดอนสามเหลี่ยมปากแม่น้ํา (din-dɔɔn-sǎam-lìiam-bpàak-mɛ̂ɛ-náam) — landform at the mouth of a river
  • Turkish: delta — landform at the mouth of a river
  • Ukrainian: де́льта (délʹta) — landform at the mouth of a river
  • Vietnamese: châu thổ — landform at the mouth of a river
  • Bulgarian: делта (delta) — mathematical symbol Δ
  • Dutch: delta — mathematical symbol Δ
  • Esperanto: delto — mathematical symbol Δ
  • Finnish: delta — mathematical symbol Δ
  • French: delta — mathematical symbol Δ
  • German: Delta — mathematical symbol Δ
  • Greek: δέλτα (délta) — mathematical symbol Δ
  • Hindi: डेल्टा (ḍelṭā) — mathematical symbol Δ
  • Marathi: डेल्टा (ḍelṭā) — mathematical symbol Δ
  • Polish: delta — mathematical symbol Δ
  • Romanian: delta — mathematical symbol Δ
  • Russian: де́льта (dɛ́lʹta) — mathematical symbol Δ
  • Thai: เดลตา (deel-dtâa) — mathematical symbol Δ
  • Finnish: erotus — computing: small but noticeable effect
  • Finnish: muutos — computing: small but noticeable effect
  • Finnish: delta — computing: small but noticeable effect
  • Russian: дельта (delʹta) — computing: small but noticeable effect
  • Finnish: muutos — computing: set of differences between two versions of a file
  • Russian: дельта (delʹta) — computing: set of differences between two versions of a file
  • Russian: разница (raznica) — computing: set of differences between two versions of a file
  • Russian: различия (različija) — computing: set of differences between two versions of a file
  • Finnish: keskuskulma — surveying: angle at the center of a circular arc
  • Bulgarian: делта (delta) — electric connection of a three-phase system
  • Finnish: kolmio — electric connection of a three-phase system
  • Finnish: delta — electric connection of a three-phase system
  • Irish: triantán — electric connection of a three-phase system
  • Polish: trójkąt — electric connection of a three-phase system
Real reading context

delta in complete knowledge articles