/ Dictionary / Index R regnant: Meaning and Definition of Find definitions for: reg•nant Pronunciation: (reg'nunt), [key] — adj. reigning; ruling (usually used following the noun it modifies): a queen regnant. exercising authority, rule, or influence. prevalent; widespread. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: regnant (Thesaurus) regnal regnat populus* Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language