cardenolide
noun
card·enol·ide
kärˈdēnᵊlˌīd
plural -s
: any of numerous organic compounds with a characteristic ring structure many of which are found in plants (as some milkweeds), have an effect on the vertebrate heart like that of digitalis, and cause vomiting
Word History
Etymology
cardiac + butenolide ring, a constituent of cardenolide