/ Dictionary / Index C capacitor: Meaning and Definition of Find definitions for: ca•pac•i•tor Pronunciation: (ku-pas'i-tur), [key] — n. Elect. a device for accumulating and holding a charge of electricity, consisting of two equally charged conducting surfaces having opposite signs and separated by a dielectric. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: capacitor (Thesaurus) capacitive reactance capacity Related Content Daily Word Quiz: topography Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language