/ Dictionary / Index P polyfunctional: Meaning and Definition of Find definitions for: pol•y•func•tion•al Pronunciation: (pol"ē-fungk'shu-nl), [key] — adj. Chem. containing more than one functional group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyfoam polygala Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language