There are 2 main definitions of Ac in English:

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Ac 1

Line breaks: Ac

symbol

The chemical element actinium.

Definition of Ac in:

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There are 2 main definitions of Ac in English:

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AC 2 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:

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Pronunciation: lʌks
adjective
expensive and of high quality; luxurious