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ac

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abbreviation
acre; acres.
QUIZ
THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?
Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.
Question 1 of 7
In the UK, COTTON CANDY is more commonly known as…

Other definitions for ac (2 of 11)

Ac1

abbreviation Chemistry.

Other definitions for ac (3 of 11)

Ac2

Symbol, Chemistry.

Other definitions for ac (4 of 11)

AC

abbreviation Electricity.

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

From Latin -acus, from Greek -akos

Other definitions for ac (7 of 11)

a.c.

abbreviation
(in prescriptions) before meals.

Origin of a.c.

From Latin ante cibum

Other definitions for ac (8 of 11)

A/C1

or a/c

[ ey-see ]
/ ˈeɪˈsi /

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

Other definitions for ac (9 of 11)

A/C2

or a/c


abbreviation Bookkeeping.

Other definitions for ac (10 of 11)

A.C.1

abbreviation
before Christ.

Origin of A.C.

1
From Latin ante Christum

Other definitions for ac (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

British Dictionary definitions for ac (1 of 6)

ac

the internet domain name for
Ascension Island

British Dictionary definitions for ac (2 of 6)

Ac

the chemical symbol for
actinium

British Dictionary definitions for ac (3 of 6)

AC

abbreviation for

Word Origin for AC

(for sense 2) Latin: before Christ

British Dictionary definitions for ac (4 of 6)

a.c.
/ obsolete /

abbreviation for
(in prescriptions) ante cibum

Word Origin for a.c.

Latin: before meals

British Dictionary definitions for ac (5 of 6)

a/c
/ accounting /

abbreviation for
account
account current

British Dictionary definitions for ac (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)

Ac

The symbol for actinium.

Scientific definitions for ac (2 of 2)

AC

Abbreviation of alternating current
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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