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
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
3
British
abbreviation
A/C
4
British
abbreviation
a/c
5
British
abbreviation
-
account
-
account current
Ac
6
British
symbol
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:
He told her to "put 120£ in this ac… please thank u baby".
From BBC ● Jul. 13, 2026
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
Because ac = Δv / Δt , the acceleration is also toward the center; ac is called centripetal acceleration.
From Textbooks ● Aug. 12, 2015
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 Ac was not arrested until July 5.
From Seattle Times ● Jul. 8, 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 we habba� n� micele maran endebyrdnysse ��re Cristes bec gesǽd �onne �is d�g�erlice godspel beh�f�, for trymminge eowres geleafan.
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
A heat wave means everybody uses more AC, so there’s more power demand, but it can also disrupt the power supply, too.
From The Wall Street Journal ● Jul. 10, 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
Buckley is considering buying a permanent AC to supplement the portable model he has been trundling between rooms.
From The Wall Street Journal ● Jul. 2, 2026
The 26-year-old joined Newcastle from AC Milan for £55m in July 2023.
From BBC ● Jul. 1, 2026
“Your dad’s gonna need AC if he’s gonna ride all the way with that boot,” said Mr. Patterson.
From "The Line Tender" by Kate Allen
Ferrari reveals its new EV, the UN shares an alternative metric to GDP, and Europe won’t embrace A/C despite deadly heatwaves.
From Slate ● May 30, 2026
And the maximum possible efficiency of SMACool is still lower than that of conventional air conditioning, although the aim is to beat the energy efficiency of A/C.
From BBC ● May 19, 2025
Instead, it is important for neighbors to check on one another, and for city services to provide people with community-oriented resilience centers that offer more than just A/C or water.
From Los Angeles Times ● Aug. 26, 2024
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
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
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
Very democratic, proud of being a plain American, she likes people, is always ac- cessible to strangers.
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
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
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 Mackenzie, Donald Alexander
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)
Other historical Pasadena figures in the book include the bookseller A.C.
From The Wall Street Journal ● Feb. 27, 2026
And Hoecht, along with defensive line coach Giff Smith and assistant A.C.
From Los Angeles Times ● Nov. 22, 2024
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
As it turned out in the end, the entire attack at Mons fell on the 2nd A.C., which lay back at an angle of forty-five degrees from the general line of defence.
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
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
People with no a/c had access to open windows and the wind.
From New York Times ● Aug. 15, 2016
Everyone drives huge SUVs, the houses have no insulation, heating on all winter, a/c on all summer, landfills are overflowing, you get punished for reusing shopping bags.
From BBC ● Jul. 10, 2011
Balance of a/c to Mr. Dickens's credit 186 16 7 1844.
From The Life of Charles Dickens, Vol. I-III, Complete by Forster, John
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.
