Dictionary  pol•y•car•bon•atePronunciation: (pol"ē-kär'bu-nāt", -nit), [key] —n. Chem. a synthetic thermoplastic resin, a linear polymer of carbonic acid, used for molded products, films, and nonbreakable windows. Cf. Lexan. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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