/ Dictionary / Index M moiety: Meaning and Definition of Find definitions for: moi•e•ty Pronunciation: (moi'i-tē), [key] — pl. -ties. a half. an indefinite portion, part, or share. one of two units into which a tribe or community is divided on the basis of unilineal descent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: moiety (Thesaurus) moidore moil 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