Dictionary![]() ![]() bu•ta•di•enePronunciation: (byOO"tu-dī'ēn, -dī-ēn'), [key] —n. Chem. a colorless, flammable gas, C4H6, soluble in alcohol but not in water, usually derived from butane or butene: used chiefly in the manufacture of rubber and paint, and in organic synthesis. Also called bivinyl, vinylethylene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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