/ Dictionary / Index M moidore: Meaning and Definition of Find definitions for: moi•dore Pronunciation: (moi'dôr, -dōr), [key] — n. a former gold coin of Portugal and Brazil. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. M.O.I. moiety Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language