/ Dictionary / Index P photopolymer: Meaning and Definition of Find definitions for: pho•to•pol•y•mer Pronunciation: (fō"tō-pol'u-mur), [key] — n. Chem. a polymer or plastic that undergoes a change in physical or chemical properties when exposed to light. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photopolarimeter photopolymerization Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language