/ Dictionary / Index B biocide: Meaning and Definition of Find definitions for: bi•o•cide Pronunciation: (bī'u-sīd"), [key] — n. any chemical that destroys life by poisoning, esp. a pesticide, herbicide, or fungicide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biochip bioclean Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language