/ Dictionary / Index B bioclean: Meaning and Definition of Find definitions for: bi•o•clean Pronunciation: (bī'ō-klēn"), [key] — adj. free or almost free from harmful microorganisms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biocide bioclimatic Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language