ac

abbreviation

acre; acres.

Other definitions for Ac (2 of 11)

Ac¹

abbreviationChemistry.

acetate.
acetyl.

Other definitions for Ac (3 of 11)

Ac²

Symbol, Chemistry.

actinium.

Other definitions for AC (4 of 11)

abbreviationElectricity.

alternating current.

Other definitions for ac- (5 of 11)

ac-

variant of ad- before c and qu: accede; acquire.

Other definitions for -ac (6 of 11)

-ac

variant of -ic after Greek noun stems ending in i:cardiac; maniac.

Origin of -ac

⁶

From Latin -acus, from Greek -akos

Other definitions for a.c. (7 of 11)

a.c.

abbreviation

(in prescriptions) before meals.

Origin of a.c.

⁷

From Latin ante cibum

Other definitions for A/C (8 of 11)

A/C¹

or a/c

[ ey-see ]

abbreviation, noun

air conditioning.

Also AC, A.C., a.c.

Other definitions for A/C (9 of 11)

A/C²

abbreviationBookkeeping.

Other definitions for A.C. (10 of 11)

A.C.¹

abbreviation

before Christ.

Origin of A.C.

¹⁰

From Latin ante Christum

Other definitions for A.C. (11 of 11)

A.C.²

abbreviation

Army Corps.
Athletic Club.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ac in a sentence

The conference room suddenly felt very warm, and I wondered if the ac had gone out.
I Shot Bin Laden | Elliot Ackerman | November 16, 2014 | THE DAILY BEAST
Cras rhoncus, massa ac mollis convallis, dui mauris porta nulla, in fringilla tortor orci sit amet est.
Test Article | CNN | October 31, 2014 | THE DAILY BEAST
Ghanaian soccer player Michael Essien, who plays for ac Milan, has been the subject of what borders on fear mongering.
Europe’s Hidden Ebola Cases | Barbie Latza Nadeau | October 15, 2014 | THE DAILY BEAST
Well, it was based on an amalgam of bands—Black Sabbath, ac/DC, Motley Crue, Judas Priest, and Van Halen.
Rob Reiner on the State of Romcoms, ‘The Princess Bride’s’ Alternate Ending, and the Red Viper | Marlow Stern | July 27, 2014 | THE DAILY BEAST
I said to the guy, “Why do they have to turn on the ac so high.”
Jamaica, We Have a Dogsled Team | Allen St. John | March 25, 2014 | THE DAILY BEAST

Annuit vero ac propemodum sese iam Nortmannum pronuntiat; nam Gallos fer omnes Nortmannos appellitant.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614 | Various
Et reliqua sunt huic cert habitationi ac nostr professioni, hoc est, paupertati 90 csentanea.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614 | Various
Quod san mirum est in hominibus, qui lege ac magistratu carent.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614 | Various
Tuguriola sua vbiuis facil ac raptim sudibus ramific dificant, & 80 aut cortice aut pellibus aut eti tegete ctegunt.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614 | Various
Et astiterunt frequenter Barbari magno semper silentio ac reuerenti.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614 | Various

British Dictionary definitions for ac (1 of 6)

the internet domain name for

Ascension Island

British Dictionary definitions for Ac (2 of 6)

the chemical symbol for

actinium

British Dictionary definitions for AC (3 of 6)

abbreviation for

alternating current: Compare DC
ante Christum

Air Corps
athletic club
Companion of the Order of Australia
appellation d'origine contrôlée: the highest French wine classification; indicates that the wine meets strict requirements concerning area of production, strength, etc: See VDQS, vin de pays, vin de table
Aelodau'r Cynulliad: Member of the Assembly (that is, the National Assembly of Wales)

Origin of AC

(for sense 2) Latin: before Christ

British Dictionary definitions for a.c. (4 of 6)

a.c.

/ obsolete /

abbreviation for

(in prescriptions) ante cibum

Origin of a.c.

⁴

Latin: before meals

British Dictionary definitions for a/c (5 of 6)

a/c

/ accounting /

abbreviation for

account
account current

British Dictionary definitions for A/C (6 of 6)

A/C

abbreviation for

(in Canada) Air Commodore

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Ac (1 of 2)

Scientific definitions for AC (2 of 2)

Abbreviation of alternating current

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