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Definition of Cardenolide
1. Noun. (organic chemistry) Any of many steroid lactones present in plants as glycosides; they are all toxic, affecting the heart ¹
¹ Source: wiktionary.com
Medical Definition of Cardenolide
1. A class of cardiac glycosides containing a five-membered lactone ring (e.g., the Digitalis glycosides). (05 Mar 2000)