AC

adj

Etymology: Abbreviation.

1. ante cibum, before meals

adv

1. Initialism of anno Christi (in the year of Christ).
2. Initialism of ante Christum, (before Christ).

name

1. Abbreviation of Aceh: a province of Indonesia.
2. Abbreviation of Acre: a state of Brazil.
3. Initialism of America's Cup (competition yacht sailing match racing regatta).
4. Initialism of Appeal Cases (a subseries of Incorporated Council of Law Reporting's Law Reports).

noun

1. Initialism of air-conditioning.
2. Initialism of altocumulus cloud.
3. Abbreviation of acetate.
4. Abbreviation of acetyl.

phrase

1. Initialism of all clear (as in button on electronic calculator).
2. Initialism of ante cibum (before meals).
3. Initialism of as charged, as in: guilty as charged, usually a/c.