ac

• POS: Noun

CIDE DICTIONARY

ac, n. 

 the chemical symbol for actinum, a radioactive element.  [WordNet 1.5]

ac, n. [Acronym from alternating current.].

 an electric current that reverses direction sinusoidally. Alternative to direct curent, DC.  [WordNet 1.5]

OXFORD DICTIONARY

ac, abbr.
1 (also ac) alternating current.
2 Brit. aircraftman.
3 before Christ.
4 Companion of the Order of Australia.

Etymology

sense 3 f. L ante Christum

ac, symb. Chem. the element actinium.

THESAURUS

ac

DC, absorption current, active current, alternating current, conduction current, convection current, cycle, delta current, dielectric displacement current, direct current, displacement current, eddy current, electric current, electric stream, emission current, exciting current, free alternating current, galvanic current, high-frequency current, idle current, induced current, induction current, ionization current, juice, low-frequency current, magnetizing current, multiphase current, pulsating direct current, reactive current, rotary current, single-phase alternating current, stray current, thermionic current, thermoelectric current, three-phase alternating current, voltaic current, watt current