/ Dictionary / Index N NOR circuit: Meaning and Definition of Find definitions for: NOR' cir"cuit Pronunciation: (nôr), [key] a circuit that is energized only when none of its inputs are energized. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Norbert Norco Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language