/ Dictionary / Index P photosynthate: Meaning and Definition of Find definitions for: pho•to•syn•thate Pronunciation: (fō"tu-sin'thāt), [key] — n. Biochem. a compound formed by photosynthesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photo story photosynthesis Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language