/ Dictionary / Index M matrilineal: Meaning and Definition of Find definitions for: mat•ri•lin•e•al Pronunciation: (ma"tru-lin'ē-ul, mā"-), [key] — adj. inheriting or determining descent through the female line. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: matrilineal (Thesaurus) matrilineage matriliny Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language