/ Dictionary / Index M multifactorial: Meaning and Definition of Find definitions for: mul•ti•fac•to•ri•al Pronunciation: (mul"tē-fak-tôr'ē-ul, -tōr'-, mul"tī-), [key] — adj. having or stemming from a number of different causes or influences: Some medical researchers regard cancer as a multifactorial disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: multifactorial (Thesaurus) multifaceted multifactorial inheritance Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language