/ Dictionary / Index P polymerize: Meaning and Definition of Find definitions for: po•lym•er•ize Pronunciation: (pu-lim'u-rīz", pol'u-mu-), [key] — v., -ized, -iz•ing. —v.t. to subject to polymerization. —v.i. to undergo polymerization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: polymerize (Thesaurus) polymerization polymerous 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