/ Dictionary / Index B bufadienolide: Meaning and Definition of Find definitions for: bu•fa•di•en•o•lide Pronunciation: (by"fu-dī-en'l-īd"), [key] — n. Biochem. any of a family of steroid lactones, occurring in toad venom and squill, that possess cardiac-stimulating and antitumor activity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Buerger's disease buff Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language