Standard Lemma guide

CD

noun · symbol · verb · 25 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.

  • /ˌsiːˈdiː/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -iː
  • CMU ARPABET: S IY2 D IY1 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Initialism of compact disc.

Definition source: English Wiktionary via Wiktextract

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

Examples

  • I misplaced the software installation CD.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Initialism of compact disc.

An album; a collection of musical recordings (or, occasionally, other audio such as spoken word).

Definition source: English Wiktionary via Wiktextract

Usage: countable, dated, metonymically, uncountable

Examples

  • Mariah Carey's new CD has some R'n'B influences.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Initialism of corps diplomatique, the diplomatic corps of a particular country.

Definition source: English Wiktionary via Wiktextract

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

Topics: diplomacy, government, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Abbreviation of certificate of deposit.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, uncountable

Topics: business, finance

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Initialism of creative director, head of the creative department (for example of an advertising agency).

Definition source: English Wiktionary via Wiktextract

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

Topics: business

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Initialism of corporate design, specific design features of a company, corporate identity CI.

Definition source: English Wiktionary via Wiktextract

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

Topics: business

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Initialism of collision detection.

Definition source: English Wiktionary via Wiktextract

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

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

Initialism of chart datum.

Definition source: English Wiktionary via Wiktextract

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

Topics: nautical, transport

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

Initialism of cross-dresser.

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

10

noun

Meaning 10

Initialism of cross-dressing.

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

11

noun

Meaning 11

Initialism of circular dichroism.

Definition source: English Wiktionary via Wiktextract

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

Qualifier: quantum mechanics

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

noun

Meaning 12

Initialism of cluster of differentiation.

Definition source: English Wiktionary via Wiktextract

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

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

noun

Meaning 13

Abbreviation of cooldown.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, uncountable

Topics: video-games

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

noun

Meaning 14

Initialism of controlled drug.

Definition source: English Wiktionary via Wiktextract

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

Topics: law

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

15

noun

Meaning 15

Abbreviation of Crohn's disease.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, countable, uncountable

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

16

noun

Meaning 16

Initialism of continuous delivery/deployment.

Definition source: English Wiktionary via Wiktextract

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

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

17

noun

Meaning 17

a type of giant elliptical galaxy

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

18

symbol

Meaning 18

compact disk

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: C

Antonyms: none provided

19

verb

Meaning 19

Initialism of cross-dress.

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

verb

Meaning 20

Abbreviation of could.

Definition source: English Wiktionary via Wiktextract

Usage: Internet, abbreviation, alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

21

adjective satellite

Meaning 21

being one hundred more than three hundred

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: four hundred, 400

Antonyms: none provided

22

noun

Meaning 22

a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: compact disk, compact disc

Antonyms: none provided

Broader terms: optical disk, optical disc, recording

Narrower terms: audio CD, audio compact disc, CD-R, compact disc recordable, CD-WO, compact disc write-once, CD-ROM, compact disc read-only memory

23

noun

Meaning 23

a debt instrument issued by a bank; usually pays interest

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: certificate of deposit

Antonyms: none provided

Broader terms: debt instrument, obligation, certificate of indebtedness

Narrower terms: time deposit

24

noun

Meaning 24

the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: candle, candela, standard candle

Antonyms: none provided

Broader terms: luminous intensity unit, candlepower unit

25

noun

Meaning 25

a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: cadmium, atomic number 48

Antonyms: none provided

Broader terms: metallic element, metal

History

Etymology

Abbreviation of various terms and phrases.

Across languages

Translations

40 source translations are retained for this English entry.

  • Arabic: سِي دِي (sī dī) — abbreviation of compact disc — see also compact disc
  • Assyrian Neo-Aramaic: ܩܘܼܪܨܵܐ ܚܠܝܼܨܵܐ (qurṣā ḥlīṣā) — abbreviation of compact disc — see also compact disc
  • Assyrian Neo-Aramaic: ܣܝܼܕܝܼ (sīdī) — abbreviation of compact disc — see also compact disc
  • Armenian: CD — abbreviation of compact disc — see also compact disc
  • Bengali: সিডি (śiḍi) — abbreviation of compact disc — see also compact disc
  • Burmese: စီဒီ (cidi) — abbreviation of compact disc — see also compact disc
  • Chinese Cantonese: CD (si1 di1) — abbreviation of compact disc — see also compact disc
  • Chinese Mandarin: CD (xīdì) — abbreviation of compact disc — see also compact disc
  • Chinese Mandarin: 光盤 /光盘 (guāngpán) — abbreviation of compact disc — see also compact disc
  • Chinese Mandarin: 光碟 (guāngdié) — abbreviation of compact disc — see also compact disc
  • Dutch: cd — abbreviation of compact disc — see also compact disc
  • Esperanto: KD — abbreviation of compact disc — see also compact disc
  • Finnish: CD — abbreviation of compact disc — see also compact disc
  • French: CD — abbreviation of compact disc — see also compact disc
  • Georgian: CD — abbreviation of compact disc — see also compact disc
  • German: CD — abbreviation of compact disc — see also compact disc
  • Greek: CD — abbreviation of compact disc — see also compact disc
  • Hindi: सीडी (sīḍī) — abbreviation of compact disc — see also compact disc
  • Italian: CD — abbreviation of compact disc — see also compact disc
  • Japanese: シーディー (sīdī) — abbreviation of compact disc — see also compact disc
  • Japanese: CD (sīdī) — abbreviation of compact disc — see also compact disc
  • Khmer: ស៊ីឌី (siidii) — abbreviation of compact disc — see also compact disc
  • Korean: 시디 (sidi) — abbreviation of compact disc — see also compact disc
  • Lao: ຊີດີ (sī dī) — abbreviation of compact disc — see also compact disc
  • Macedonian: це-де (ce-de) — abbreviation of compact disc — see also compact disc
  • Malay: CD — abbreviation of compact disc — see also compact disc
  • Marathi: सीडी (sīḍī) — abbreviation of compact disc — see also compact disc
  • Mòcheno: CD — abbreviation of compact disc — see also compact disc
  • Classical Nahuatl: yahualtōntli — abbreviation of compact disc — see also compact disc
  • Persian: سیدی (si-di) — abbreviation of compact disc — see also compact disc
  • Polish: CD — abbreviation of compact disc — see also compact disc
  • Portuguese: CD — abbreviation of compact disc — see also compact disc
  • Russian: CD — abbreviation of compact disc — see also compact disc
  • Russian: си-ди́ (si-dí) — abbreviation of compact disc — see also compact disc
  • Spanish: CD — abbreviation of compact disc — see also compact disc
  • Swedish: CD — abbreviation of compact disc — see also compact disc
  • Thai: ซีดี (sii-dii) — abbreviation of compact disc — see also compact disc
  • Urdu: سی ڈی (sī-ḍī) — abbreviation of compact disc — see also compact disc
  • Vietnamese: CD — abbreviation of compact disc — see also compact disc
  • Welsh: CD — abbreviation of compact disc — see also compact disc