There are 2 main definitions of Ac in English:

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Ac1

Syllabification: Ac

symbol

The chemical element actinium.

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There are 2 main definitions of Ac in English:

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AC2

Syllabification: AC

abbreviation

1 (also ac) Alternating current.
1.1 (also ac) Air conditioning: a sedan with power steering and AC
1.2Before Christ.
[from Latin ante Christum]
1.4Athletic club.
1.5 (ac.) North American Acre: a 22-ac. site

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