ac

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abbreviation

acre; acres.

QUIZ

CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?

There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?

Question 1 of 7

Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

TAKE THE QUIZ TO FIND OUT

Other definitions for ac (2 of 11)

Ac¹

abbreviation Chemistry.

acetate.

acetyl.

Other definitions for ac (3 of 11)

Ac²

Symbol, Chemistry.

actinium.

Other definitions for ac (4 of 11)

abbreviation Electricity.

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

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

air conditioning.

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

Other definitions for ac (9 of 11)

A/C²

or a/c

abbreviation Bookkeeping.

account.

account current.

Other definitions for ac (10 of 11)

A.C.¹

abbreviation

before Christ.

Origin of A.C.

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

ROME — What does it take for a Hollywood A-lister to get a private audience with Pope Francis?
Pope Francis Has the Pleasure of Meeting Angelina Jolie for a Few Seconds|Barbie Latza Nadeau|January 8, 2015|DAILY BEAST
Yes, Byrd—dead four-and-a-half years now—was a Kleagle in the Ku Klux Klan.
Steve Scalise and the Right’s Ridiculous Racial Blame Game|Michael Tomasky|January 2, 2015|DAILY BEAST
Rule 16(c) was a proposed change in the rules at the 1976 Republican Convention.
The World’s Toughest Political Quiz|Jeff Greenfield|December 31, 2014|DAILY BEAST
By the time it concluded with a sing-a-long of “XO,” Beyoncé had done the rare thing.
Bow Down, Bitches: How Beyoncé Turned an Elevator Brawl Into a Perfect Year|Kevin Fallon|December 31, 2014|DAILY BEAST

In another year, stories about the strange new face of an A-list actress might draw chortles and cackles.
Renée Zellweger Got a New Face—and Everyone Had An Opinion About It|Kevin O’Keeffe|December 29, 2014|DAILY BEAST
Now-a-days it is the bankrupt who flouts, and his too confiding creditors who are jeered and laughed at.
Glances at Europe|Horace Greeley
C was a Captain, all covered with lace; D was a drunkard, and had a red face.
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
He was a bookseller, but better known as a translator of the German contributor to the Gentleman's Magazine, &c.
The Every Day Book of History and Chronology|Joel Munsell
He felt himself the meanest, vilest thing a-crawl upon this sinful earth, and she—dear God!
St. Martin's Summer|Rafael Sabatini
All that scientific bric-a-brac in the cupboard had far better be thrown away.
The Salvaging Of Civilisation|H. G. (Herbert George) Wells

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 currentCompare 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, etcSee VDQS, vin de pays, vin de table

Aelodau'r Cynulliad: Member of the Assembly (that is, the National Assembly of Wales)

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)

The symbol for actinium.

Scientific definitions for ac (2 of 2)

Abbreviation of alternating current

ac

Other definitions for ac (2 of 11)

Other definitions for ac (3 of 11)

Other definitions for ac (4 of 11)

Other definitions for ac (5 of 11)

Other definitions for ac (6 of 11)

Origin of -ac

Other definitions for ac (7 of 11)

Origin of a.c.

Other definitions for ac (8 of 11)

or a/c

Other definitions for ac (9 of 11)

or a/c

Other definitions for ac (10 of 11)

Origin of A.C.

Other definitions for ac (11 of 11)

Words related to ac

How to use ac in a sentence

British Dictionary definitions for ac (1 of 6)

British Dictionary definitions for ac (2 of 6)

British Dictionary definitions for ac (3 of 6)

Word Origin for AC

British Dictionary definitions for ac (4 of 6)

Word Origin for a.c.

British Dictionary definitions for ac (5 of 6)

British Dictionary definitions for ac (6 of 6)

Scientific definitions for ac (1 of 2)

Scientific definitions for ac (2 of 2)