/ Dictionary / Index B bioherm: Meaning and Definition of Find definitions for: bi•o•herm Pronunciation: (bī'ō-hûrm"), [key] — n. Geol. a carbonate rock formation, in the form of an ancient reef or hummock, consisting of the fossilized remains of corals, algae, mollusks, and other sedentary marine life, and commonly surrounded by rock of a different lithology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biohazard bioinorganic Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language