/ Dictionary / Index O open circuit: Meaning and Definition of Find definitions for: o'pen cir'cuit Pronunciation: [key] — Elect. Elect. a discontinuous circuit through which no current can flow. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. open chain open city Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language