/ Dictionary / Index P polytrophic: Meaning and Definition of Find definitions for: pol•y•troph•ic Pronunciation: (pol"ē-trof'ik, -trō'fik), [key] — adj. (of certain bacteria) deriving nourishment from many organic substances. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polytriglyph polytypic Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language