AC

A-C · noun

imported

Definitions

noun

  1. 1.

    Air conditioning or an air conditioner.

  2. 2.

    Alternating current, an electric current that reverses direction periodically.

  3. 3.

    (Academic) *Ante Christum* (before Christ), equivalent to BC.

Forms

plural: ACs

Phrases & expressions

  • •
    AC/DC — Able to operate on both alternating and direct current; also a famous rock band.
  • •
    AC unit — An air conditioning device.

Related words

See also: DC, air conditioning
Synonyms: air conditioner, air conditioning

Etymology

Abbreviation. For air conditioning: from the first letters of air conditioning. For alternating current: from the first letters of alternating current.