Word.ws English Dictionary

ac

ac noun: account; money of account. Also the abbreviation of acre.

Noun (1)

ac (plural acs)

  1. account; money of account
  2. alicyclic

Adjective (1)

ac (not comparable)

  1. ante cibum, before meals

Noun (2) capitalized: AC

AC (countable and uncountable, plural ACs)

  1. (abbreviation, initialism) Initialism of absolute ceiling.
  2. (abbreviation, initialism) Initialism of access control.
  3. (abbreviation, initialism) Initialism of account current.
  4. (abbreviation, initialism) Initialism of anterior chamber.
  5. (abbreviation, initialism) Initialism of adult contemporary (a radio format).
  6. (abbreviation, initialism) Initialism of adenylyl cyclase.
  7. (abbreviation, initialism) Initialism of adjuvant chemotherapy.
    • Current UK practice, supported by NICE guidance is to complete local pelvic treatment with surgery±pre-operative radiotherapy, before considering systemic adjuvant chemotherapy (AC)2018, Gollins S et al., “A prospective phase II study of pre-operative chemotherapy then short-course radiotherapy for high risk rectal cancer: COPERNICUS”, in British Journal of Cancer
  8. (abbreviation, initialism, uncountable) Initialism of air conditioning.
  9. (abbreviation, countable, initialism) Initialism of air conditioner.
    • Our summer electric bill is around $120/month just from using 15,000 and 10,000 btu ACs.1997 June 18, Brooks Taylor, “AC/Heat from ground?”, in sci.engr.heat-vent-ac (Usenet), archived from the original on 01 Jul 2026
    • If you want to cool or heat specific rooms with better efficiency, more power, and less clutter than window ACs and space heaters—and less complexity than central HVAC—consider a mini-split system.2020 June 29, Doug Mahoney, Harry Sawyers, “The Best Ductless Mini Split Air Conditioner”, in Wirecutter, New York, N.Y.: The New York Times Company, →ISSN, →OCLC, archived from the original on 25...
  10. (abbreviation, initialism) Initialism of air corps.
  11. (abbreviation, initialism) Initialism of aircraftman.
  12. (abbreviation, initialism) Initialism of alternating current (often used to indicate an alternating potential rather than a current).
    • 110 V AC
    1. (broadly, informal) supply of electric energy via a public electricity grid
Show 19 more meaningsShow fewer meanings
  1. (abbreviation, initialism) Initialism of area code.
  2. (abbreviation, initialism) Initialism of army corps.
  3. (abbreviation, initialism) Initialism of athletic club.
  4. (abbreviation, initialism) Initialism of author's correction.
  5. (abbreviation, initialism) Initialism of automobile club.
  6. (US, abbreviation, initialism) Initialism of Auxiliary Collier (a naval coal transport that travels with the fleet to provide coal for coal-powered warships).
  7. (abbreviation, initialism) Initialism of axiom of choice.
  8. (UK, abbreviation, initialism) Initialism of assistant commissioner, a police rank used in London's Metropolitan Police.
  9. (Australia) Companion of the Order of Australia.
  10. (abbreviation, initialism) Initialism of aviation cadet.
  11. (abbreviation, initialism) Initialism of ammonium chloride.
  12. (abbreviation, initialism) Initialism of autonomous county.
  13. (abbreviation, initialism, roleplaying games) Initialism of armor class.
  14. (singular, autism) singular of ACs (“autistics and cousins”).
  15. (abbreviation, initialism, prison) Initialism of administrative custody.
    • We the women in A.C. are on a hunger strike.1988 February 7, Delana Emery, “Women Prisoners On Hunger Strike For Equal Rights”, in Gay Community News, volume 15, number 29, page 5
  16. (abbreviation, initialism, Anglicanism) Initialism of Anglo-Catholic.
  17. (abbreviation, initialism) Initialism of asphalt concrete.
  18. (abbreviation, initialism) Initialism of asphalt cement.
  19. (abbreviation, initialism) Initialism of asphalt content.

Adjective (2) capitalized: AC

AC (not comparable)

  1. (abbreviation, initialism) Initialism of acromioclavicular.
    • AC joint; AC separation
  2. (abbreviation, initialism) Initialism of air conditioned.
  3. (abbreviation, initialism) Initialism of antichristian.

Adverb capitalized: AC

AC (not comparable)

  1. (abbreviation, initialism) Initialism of anno Christi (in the year of Christ).
    Synonyms:
    AD
  2. (abbreviation, initialism) Initialism of ante Christum, (before Christ).
    Synonyms:
    BC

Phrase capitalized: AC

AC

  1. (abbreviation, initialism) Initialism of all clear (as in button on electronic calculator).
  2. (abbreviation, initialism) Initialism of ante cibum (before meals).
  3. (abbreviation, initialism) Initialism of as charged, as in: guilty as charged, usually a/c.

Proper noun capitalized: AC

AC

  1. (abbreviation) Abbreviation of Aceh: a province of Indonesia.
  2. (abbreviation) Abbreviation of Acre: a state of Brazil.
  3. (abbreviation, initialism) Initialism of America's Cup (competition yacht sailing match racing regatta).
  4. (abbreviation, initialism) Initialism of Appeal Cases (a subseries of Incorporated Council of Law Reporting's Law Reports).

Verb capitalized: AC

AC (third-person singular simple present ACs, present participle ACing, simple past and past participle ACed)

  1. (abbreviation, initialism) Initialism of air-condition.
    • My heating and cooling bills were within reason for the past 3 years. We only ran the AC/Heat from 6pm to midnight, but with the arrival of my son and mother-inlaw^([sic]) we must heat and AC 24 hrs a day.1997 June 18, Brooks Taylor, “AC/Heat from ground?”, in sci.engr.heat-vent-ac (Usenet), archived from the original on 01 Jul 2026
    • I've been thinking of getting a little 6000BTU unit to AC my bedroom so I can venture into lower altitudes during the summer.2008 June 22, ~~NoMad~~, “An amazing AC unit”, in alt.energy.homepower (Usenet), archived from the original on 01 Jul 2026

Noun (3) capitalized: Ac

Ac (plural Acs)

  1. (slang, African-American Vernacular) The Acura Legend automobile.
    • With the Mac in the Ac door paneling1994, Notorious B.I.G., Unbelievable

Noun (4) capitalized: Ac

Ac

  1. (abbreviation, initialism) Initialism of air-conditioning.
  2. (abbreviation, initialism) Initialism of altocumulus cloud.
  3. (abbreviation) Abbreviation of acetate.
  4. (abbreviation) Abbreviation of acetyl.

Also used as

ac is also the abbreviation of acre.

ac is also the alternative letter-case form of AC.

ac meaning in Hindi, Marathi, Urdu and Bengali

ac in Hindi

एसी

ac in Marathi

एसी

ac in Urdu

اے سی

ac in Bengali

এসি
More languagesFewer languages
ac in Telugu
ఎసి
ac in Malayalam
എസി
ac in Kannada
ಎಸಿ
ac in Punjabi
ਏਸੀ
ac in Gujarati
એસી
ac in Odia
ଏସି
ac in Nepali
एसी, एसि

Synonyms of ac

Antonyms

  • antonym(s) of

Forms of ac

Noun
pluralacs
pluralACs
alternative forma.c.
alternative formA/C
alternative forma/c
alternative formA.C.
alternative formac
alternative formA. C.
pluralAcs
Verb
third-person singular presentACs
present participleACing
past participleACed
pastACed

Plural of ac: acs

Origin of ac

Abbreviation.

Words formed from ac

Phrases with ac

Questions about ac

What does ac mean?
Ac means account; money of account.
What is ac in Hindi?
Ac in Hindi is एसी. See Ac meaning in Hindi.
What part of speech is ac?
Ac can be a noun, an adjective, an adverb or a phrase.
What is the plural of ac?
The plural of ac is acs.

Words near ac in the dictionary

  1. abzyme
  2. abzymes
  3. Abé
  4. Abéché
  5. Abū Ẓaby
  6. ac
  7. AC adapter
  8. AC adapters
  9. ac etiam
  10. AC Plonk
  11. AC Plonks

Source and license

Adapted from Wiktionary: ac (page history and authors); AC (page history and authors); Ac (page history and authors); ac (Hindi, IndicTrans2 machine translation) (model and license); ac (Marathi, IndicTrans2 machine translation) (model and license); ac (Urdu, IndicTrans2 machine translation) (model and license); ac (Bengali, IndicTrans2 machine translation) (model and license); ac (Telugu, IndicTrans2 machine translation) (model and license); ac (Malayalam, IndicTrans2 machine translation) (model and license); ac (Kannada, IndicTrans2 machine translation) (model and license); ac (Punjabi, IndicTrans2 machine translation) (model and license); ac (Gujarati, IndicTrans2 machine translation) (model and license); ac (Odia, IndicTrans2 machine translation) (model and license); ac (Nepali, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “ac.” Word.ws, https://word.ws/ac. Based on Wiktionary, CC BY-SA 4.0.