Ac

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Ac

, chemical symbol
Ac, symbol for the element actinium.
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ac

(electricity)

aC

(electricity)

Ac

(chemistry)
(meteorology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

AC

1. On drawings, abbr. for alternating current.
2. On drawings, abbr. for armored cable.
3. Abbr. for air conditioning.
4. Abbr. for “asbestos cement.”

alternating current

An electric current that varies periodically in value and direction, first flowing in one direction in the circuit and then flowing in the opposite direction; each complete repetition is called a cycle, and the number of repetitions per second is called the frequency; usually expressed in Hertz (Hz).
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

AC

(1) The latest Wi-Fi version. See 802.11ac.

(2) (Alternating Current) The common form of electricity from power plant to home and office. Its direction is reversed 60 times per second in the U.S.; 50 times in Europe. Contrast with DC.
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References in periodicals archive ?
A.C. Moore is a specialty retailer offering a selection of arts, crafts and floral merchandise to a broad demographic of customers.
A.C. Moore was advised on both transactions by EGL Holdings, an Atlanta-based boutique investment banking company.
-- The Oracle Retail applications provide A.C. Moore with a foundation for making insight-driven business decisions and the retailer expects the solutions to help reduce inventory by as much as 20 percent.
While Renner and her partner, 17-year-old Angela Kapalczynski, set up their presentation at the front of the classroom, A.C. and Maggie likewise prepared at the back:
Then A.C. said, "Lori, I know you're not warmed up, but would you just grab your leg for me before you go?" So in pink satin overalls and platform shoes, I grand battement my right leg, catch it with my left hand behind my shoulder, and hold it smiling, because I know he is giving me a chance to set myself apart from everyone else he sees that day.
For FTP testing, a.c. dynamometers offer superior response to the transient conditions involved in these driving cycles.