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Meaning of polyvinyl formal

pol'yvi'nyl for'mal

Pronunciation: (fôr'mal), [key]
— Chem. Chem.
  1. a colorless, water-insoluble, polyvinyl acetal produced from partially hydrolyzed polyvinyl acetate and formaldehyde, used chiefly in the manufacture of lacquers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.