/ Dictionary / Index C cardiolipin: Meaning and Definition of Find definitions for: car•di•o•lip•in Pronunciation: (kär"dē-ō-lip'in), [key] — n. Biochem. a lipid purified from bovine heart and used as an antigen for reacting with reagin, the Wassermann antibody, in the Wassermann diagnostic test for syphilis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cardioid cardiology Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language