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Synonyms

ac

1 American  

abbreviation

  1. acre; acres.


Ac 2 American  

abbreviation

Chemistry.
  1. acetate.

  2. acetyl.


Ac 3 American  
Symbol, Chemistry.
  1. actinium.


AC 4 American  

abbreviation

Electricity.
  1. alternating current.


A/C 5 American  
[ey-see] / ˈeɪˈsi /
Also AC, or a/c

abbreviation

  1. air conditioning.


A/C 6 American  
Or a/c

abbreviation

Bookkeeping.
  1. account.

  2. account current.


ac- 7 American  
  1. variant of ad- before c and qu: accede; acquire.


-ac 8 American  
  1. variant of -ic after Greek noun stems ending in i: cardiac; maniac.


a.c. 9 American  

abbreviation

  1. (in prescriptions) before meals.


A.C. 10 American  

abbreviation

  1. before Christ.


A.C. 11 American  

abbreviation

  1. Army Corps.

  2. Athletic Club.


AC 1 British  

abbreviation

  1. alternating current Compare DC

  2. ante Christum

  3. Air Corps

  4. athletic club

  5. Companion of the Order of Australia

  6. 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

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

"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

ac 2 British  

abbreviation

  1. Ascension Island

"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

A/C 3 British  

abbreviation

  1. 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

a.c. 4 British  

abbreviation

  1. (in prescriptions) ante cibum

"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

a/c 5 British  

abbreviation

  1. account

  2. account current

"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

Ac 6 British  

symbol

  1. actinium

"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

AC Scientific  
  1. Abbreviation of alternating current


Etymology

Origin of -ac8

From Latin -acus, from Greek -akos

Origin of a.c.9

From Latin ante cibum

Origin of A.C.10

From Latin ante Christum

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He was a very well-known, established character ac even before "I Love Lucy."

From Fox News Jun. 5, 2021

Comparing not having A/C to 100 years ago when there was no ac is not a fair comparison.

From New York Times Aug. 15, 2016

Figure 10.5 Centripetal acceleration ac occurs as the direction of velocity changes; it is perpendicular to the circular motion.

From Textbooks Aug. 12, 2015

Ngawang Doka replied in clear, sparkling English that carried a hint of a Canadian ac cent.

From "Into Thin Air" by Jon Krakauer

It stood just ac ross from the cobhoust, a tumbledown shed full of stuff left there in Grandpa Dowdel’s time.

From "A Long Way from Chicago" by Richard Peck

Balcarcel’s attorney, Samuel Simpson V, said Monday that he would be “very surprised” if Balcarcel Ac and Alvarado-Dubon were planning a mass shooting.

From Seattle Times Jul. 11, 2022

Both men are being held in local jails, Balcarcel Ac in Charlottesville and Alvarado-Dubon in Richmond.

From Seattle Times Jul. 8, 2022

Even to copy a relatively short paper, “Proc Nat Ac Sci”—“Proceedings of the National Academy of Sciences”—could take the better part of an hour.

From The New Yorker Jan. 6, 2020

Actinium, Ac, is the first member of the fourth transition series, which also includes Rf through Rg.

From Textbooks Feb. 14, 2019

Ac seo gytsung is ealra yfelra �inga wyrtruma; and �a �e fyliga� ��re gytsunge, h� dwelia� fram Godes geleafan, and hi befealla� on mislice costnunga and derigendlice lustas, �e hi besenca� on forwyrd.

From The Homilies of the Anglo-Saxon Church Containing the Sermones Catholici, or Homilies of ?lfric, in the Original Anglo-Saxon, with an English Version. Volume I. by Aelfric, Abbot of Eynsham

If his beloved Inter Milan won the Italian championship and rival AC Milan failed to qualify for the European Champions League, he would go on a religious pilgrimage.

From The Wall Street Journal Jul. 4, 2026

“The AC changed the trajectory of the game,” he says.

From The Wall Street Journal Jul. 3, 2026

"I just take him on really short walks, and then go back home and put him in the AC, and like, make sure he has water," she told AFP.

From Barron's Jul. 2, 2026

The 26-year-old joined Newcastle from AC Milan for £55m in July 2023.

From BBC Jul. 1, 2026

“Sorry. I don’t have access to AC that makes August feel like December.”

From "The Serpent King" by Jeff Zentner

The first statement shows a payment was sent to a Barclays account where Reinaldo Avila da Silva is named as "A/C", typically an abbreviation for account.

From BBC Feb. 2, 2026

If what comes out when we look at the A/C circles entails the representation of the form of the conclusion, BOOM, the argument is valid.

From Salon Jul. 29, 2024

After a series of relentless summer heat waves, her A/C sputtered out and she felt at times as though she was suffocating inside the vehicle, soaked in sweat.

From Los Angeles Times Oct. 3, 2023

I much enjoyed the juicy, clearly local heirloom tomatoes, one of the good things about too-hot days, best enjoyed with a friend in a fancyish lounge with drinks and A/C.

From Seattle Times Aug. 24, 2023

Roy waited inside for a while, but without A/C it was unbearably hot and sticky.

From "Hoot" by Carl Hiaasen

Still, with the prices of many commodities climbing, the companies couldn’t ac- commodate price shocks, so they often  wound  up hiring banks to hedge their vulnerability to volatile product markets.

From MSNBC Jun. 4, 2014

“I suppose the problem at the moment is that we don’t have a one- to-one mapping, because even our best theories aren’t completely ac- curate,” Ladyman said.

From Scientific American Jan. 31, 2014

The government has devised civic ac- tion programs to rebuild damaged hamlets, and anti-guerrilla patrols are often accompanied by doctors who bring free medical care to the hill people.

From Time Magazine Archive

She is all that is artistic without being vulgar and is the one ac- tress today who can wink without being suggestive.

From Time Magazine Archive

NOTE.—The forms ac-, af-, etc., are euphonic variations of ad-, and follow generally the rule that the final consonant of the prefix assimilates to the initial letter of the root.

From New Word-Analysis by William Swinton

NOTE.—The suffix -ac is found only in Latin derivatives of Greek origin.

From New Word-Analysis by William Swinton

A new report finds that about 3% of autos--high- and low-end models--have fungi and bacteria breeding in the moisture that collects on the a.c.

From Time Magazine Archive

The 60 h.p. has parallel a.c. cylinders, the other two are radial w.c.

From Jane's All the World's Aircraft 1913 by Various

Power.—A transformer for stepping down a commercial alternating current for lighting and heating the filament and for stepping up the commercial a.c., for charging the plate of a vacuum tube oscillator.

From The Radio Amateur's Hand Book by Collins, A. Frederick (Archie Frederick)

These writings are said to date from about 97 to 150 a.c.

From Frauds and Follies of the Fathers A Review of the Worth of their Testimony to the Four Gospels by Wheeler, Joseph Mazzini

It turned out that all electricity here was d.c., conjured up by commanding the electrons in a wire to move in one direction, and completely useless with a.c. motors.

From The Sky Is Falling by Del Rey, Lester

Other historical Pasadena figures in the book include the bookseller A.C.

From The Wall Street Journal Feb. 27, 2026

But the filmmaking team is fairly confident it belongs to Irvine, due to the sock found inside the boot being embroidered with the words "A.C. Irvine".

From BBC Oct. 11, 2024

The company was born in the garage of A.C.

From Seattle Times Apr. 22, 2024

Behind the wheel of the Bronco was Simpson’s boyhood friend and former NFL colleague A.C.

From Los Angeles Times Apr. 11, 2024

The question as to how best to dispose of this 1st A.C. was an extremely delicate one.

From The First Seven Divisions Being a Detailed Account of the Fighting from Mons to Ypres by Hamilton, Ernest W.

Chris Coucheron-Aamot, a guest at the Sandals resort, wrote on Facebook that the cause of the episode “may have been a fault with the a/c in the unit, causing a toxic coolant leak.”

From Seattle Times May 9, 2022

During this meeting, Spencer noted some 30 claims which he attributes to Bashir, including Jephson's alleged plots against her: "Jephson - dangerous: money. Left offshore a/c in March 1994".

From BBC May 20, 2021

If that power comes from fossil fuels, a/c alone will account for a half-degree Celsius rise in global temperatures.

From The Guardian Aug. 11, 2019

Not a single prison should get a/c before all the schools in our nation have a/c.

From New York Times Aug. 20, 2016

Was two hours late getting in to Chicago on a/c freight wreck and missed seeing Kuhner his sister's daughter gets married and Kuhner goes to the wedding.

From Potash & Perlmutter Their Copartnership Ventures and Adventures by Glass, Montague

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