/ Dictionary / Index F functor: Meaning and Definition of Find definitions for: func•tor Pronunciation: (fungk'tur), [key] — n. that which functions. a function word or affix. Cf. contentive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. function word fund 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