define tricuspid
Define tricuspid. tricuspid synonyms, tricuspid pronunciation, tricuspid translation, English dictionary definition of tricuspid. n. An organ or part, especially a tooth, having three cusps. adj. also triÂ·cusÂ·piÂ·dal or triÂ·cusÂ·piÂ·date 1. Having three cusps, especially a molar tooth.