ac
abbreviation
acre; acres.
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ac
1 Americanabbreviation
Ac
3
American
Symbol, Chemistry.
AC
4
American
abbreviation
Electricity.
A/C
5
American
[ey-see]
/ ˈeɪˈsi /
Also
AC,
or
a/c
abbreviation
A/C
6
American
Or
a/c
ac-
7
American
-ac
8
American
a.c.
9
American
abbreviation
A.C.
10
American
abbreviation
A.C.
11
American
abbreviation
-
Army Corps.
-
Athletic Club.
a.c.
1
British
abbreviation
Ac
2
British
symbol
a/c
3
British
abbreviation
-
account
-
account current
A/C
4
British
abbreviation
AC
5
British
abbreviation
-
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)
ac
6
British
abbreviation
AC
Scientific
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:
Our Welsh language friends can start listening to the big match build-up now by using the Carl ac Alun link above.
From BBC ● Mar. 25, 2024
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
For uniform circular motion, the acceleration is the centripetal acceleration— a = ac .
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
Both men are being held in local jails, Balcarcel Ac in Charlottesville and Alvarado-Dubon in Richmond.
From Seattle Times ● Jul. 8, 2022
An agent from Homeland Security Investigations determined that both men are in the U.S. illegally and that Balcarcel Ac has had two previous deportations, the affidavit states.
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
For hem ne sameð ne ne grameð þe sulle ben iboreȝe 41 Ac þoðre habbeð same ⁊ grame ⁊ oðer fele soreȝe.
From Selections from early Middle English, 1130-1250 Part I: Texts by Joseph Hall
A broken car AC and soaring L.A. summer temperatures sent one writer on a search for cooling remedies and tonics.
From Los Angeles Times ● Sep. 2, 2026
Sunderland will mark their first European campaign since 1973 with a trip to the San Siro after drawing AC Milan in the Europa League.
From BBC ● Aug. 28, 2026
Appeared in the August 19, 2026, print edition as 'The Economic Case for European AC'.
From The Wall Street Journal ● Aug. 18, 2026
Productivity plummets when workers without AC suffer from heat stress.
From The Wall Street Journal ● Aug. 18, 2026
Every AC Transit bus is equipped with cameras that continuously record sound and video from multiple vantage points.
From "The 57 Bus" by Dashka Slater
To study the process, the researchers developed a mouse model in which they could switch off the lamin A/C gene specifically in adipocytes.
From Science Daily ● Jul. 26, 2026
Appeared in the July 25, 2026, print edition as 'Notable & Quotable: A/C'.
From The Wall Street Journal ● Jul. 24, 2026
A team led by Hong Kong researchers recently created an A/C alternative that achieved a cooling power of 1,284W—the first time an elastocaloric device surpassed the 1,000W mark.
From BBC ● May 19, 2025
You’re cruising down the 101 Freeway in 2050, A/C cranking and music blaring, when you spot a relic from another era: a late 2020s crossover SUV.
From Los Angeles Times ● Sep. 9, 2024
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
And when the drummers, ac- cepting his drink, raised their glasses and said, “Here’s to you,” Charles was delighted.
From "East of Eden" by John Steinbeck
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 A. Frederick (Archie Frederick) Collins
In the third century a.c. he composed in Greek a history of his native land, which has perished.
From Myths of Babylonia and Assyria by Donald Alexander Mackenzie
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 Lester Del Rey
Other historical Pasadena figures in the book include the bookseller A.C.
From The Wall Street Journal ● Feb. 27, 2026
Tired of having to scrap their way through the streets of West Compton in the early 1970s, A.C.
From Los Angeles Times ● Feb. 22, 2025
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
Sir Horace was for the moment an A.C. commander without an A.C., the remnants of his six heroic brigades being scattered here and there along the whole front.
From The First Seven Divisions Being a Detailed Account of the Fighting from Mons to Ypres by Ernest W. Hamilton
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
The a/c is just about coping but I am dreading the operating list this afternoon.
From The Guardian ● Jul. 24, 2019
People with no a/c had access to open windows and the wind.
From New York Times ● Aug. 15, 2016
I ask this because, in my ignorance of figures, I shall be little the wiser when the a/c is before me.
From Charles Lever, His Life in His Letters, Vol. I by Edmund Downey
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
