/ Dictionary / Index P polymerous: Meaning and Definition of Find definitions for: po•lym•er•ous Pronunciation: (pu-lim'ur-us), [key] — adj. composed of many parts. having numerous members in each whorl. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polymerize polymethyl methacrylate Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language