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Furfuran \Fur"fu*ran\, n. [L. furfur bran.] (Chem.) A colorless, oily substance, {C4H4O}, obtained by distilling certain organic substances, as pine wood, salts of pyromucic acid, etc.; -- called also {tetraphenol}.
furfuran n : a colorless toxic flammable liquid used in the synthesis of nylon [syn: {furan}, {furane}]