/ Dictionary / Index B bivinyl: Meaning and Definition of Find definitions for: bi•vi•nyl Pronunciation: (bī-vīn'l), [key] — n. Chem. butadiene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bivariate bivoltine Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language