AC

AC

1.
Real Estate. air conditioning.
2.
Electricity. alternating current.
Dictionary.com Unabridged

Ac

Chemistry.

Ac

Symbol, Chemistry.

ac

Electricity. alternating current.

ac-

variant of ad- before c and qu: accede; acquire.

-ac

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

Origin:
< Latin -acus < Greek -akos

A/C

1.
Bookkeeping.
b.
account current.
2.
Real Estate. air conditioning.
Also, a/c.

A.C.

1
before Christ.

Origin:
< Latin ante Christum

A.C.

2
1.
Real Estate. air conditioning.
2.
Electricity. alternating current.
3.
Army Corps.
4.
Athletic Club.

a.c.

1
(in prescriptions) before meals.

Origin:
< Latin ante cibum

a.c.

2
1.
Real Estate. air conditioning.
2.
Electricity. alternating current.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To Ac
Collins
World English Dictionary
ac
 
the internet domain name for
Ascension Island

Ac
 
the chemical symbol for
actinium

AC
 
abbreviation for
1.  Compare DC alternating current
2.  ante Christum
3.  Air Corps
4.  athletic club
5.  Companion of the Order of Australia
6.  VDQS vin de pays See vin de table appellation d'origine contrôlé the highest French wine classification; indicates that the wine meets strict requirements concerning area of production, strength, etc
7.  Aelodau'r Cynulliad: Member of the Assembly (that is, the National Assembly of Wales)
 
[(for sense 2) Latin: before Christ]

a.c.
 
abbreviation for
(in prescriptions) ante cibum
 
[Latin: before meals]

a/c
 
abbreviation for
1.  account
2.  account current

A/C
 
abbreviation for
Air Commodore

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

ac abbr.
Latin ante cibum (before a meal)

Ac 1

The symbol for the element actinium.

ac- pref.
Variant of ad-.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
Ac  
The symbol for actinium.
AC  
Abbreviation of alternating current
actinium   (āk-tĭn'ē-əm)  Pronunciation Key 
Symbol Ac
A silvery-white, highly radioactive metallic element of the actinide series that is found in uranium ores. It is about 150 times more radioactive than radium and is used as a source of alpha rays and neutrons. Its most stable isotope has a half-life of about 22 years. Atomic number 89; melting point 1,050°C (1,922°F); boiling point (estimated) 3,200°C (5,792°F); specific gravity (calculated) 10.07; valence 3. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Abbreviations & Acronyms
Ac
  1. actinium

  2. Acts of the Apostles

AC
  1. adult contemporary

  2. air conditioning

  3. alternating current

a.c.
Latin ante cibum (before meals)
A.C.
  1. Latin anno Christi (the year of Christ)

  2. appellate court

  3. Army Corps

  4. Athletic Club

a/c
  1. account

  2. account current

  3. air conditioning

A/C
aircraft
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

ac

(Ac), radioactive chemical element, in Group IIIb of the periodic table, atomic number 89. Actinium was discovered (1899) by Andre-Louis Debierne in pitchblende residues left after Pierre and Marie Curie had extracted radium and was also discovered (1902) independently by Friedrich Otto Giesel. A ton of pitchblende ore contains about 0.15 mg of actinium. The rare, silvery-white metal is highly radioactive, glowing blue in the dark

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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