/ Dictionary / Index B biofog: Meaning and Definition of Find definitions for: bi•o•fog Pronunciation: (bī'ō-fog", -fôg"), [key] — n. Meteorol. a fog, resembling steam fog, produced by the contact of very cold air with the warmth and moisture issuing from animal or human bodies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bioflavonoid biofuel Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language