/ Dictionary / Index P polyvinylidene: Meaning and Definition of Find definitions for: pol•y•vi•nyl•i•dene Pronunciation: (pol"ē-vī-nil'i-dēn"), [key] — adj. Chem. pertaining to or derived from a polymer of a vinylidene compound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyvinyl formal polyvinylidene chloride 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