There are 2 main definitions of Ac in English:

Ac1

Line breaks: Ac

symbol

The chemical element actinium.

Definition of Ac in:

There are 2 main definitions of Ac in English:

AC2

Line breaks: AC
Pronunciation: /eɪˈsiː
 
/

abbreviation

1 (also a.c.) Alternating current: [as modifier]: the AC supply
1.2Aircraftman or Aircraftwoman.
1.4Athletic club.
1.5 (ac.) North American Acre: a 22-ac. site
1.6Before Christ.
[from Latin ante Christum]
1.7Companion of the Order of Australia.

Definition of Ac in: