/ Dictionary / Index M materfamilias: Meaning and Definition of Find definitions for: ma•ter•fa•mil•i•as Pronunciation: (mā"tur-fu-mil'ē-us), [key] — n. the mother of a family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: materfamilias (Thesaurus) mater dolorosa* material Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language