The Collaborative International Dictionary
Vernonin
Vernonin \Ver"no*nin\, n. (Chem.) A glucoside extracted from the root of a South African plant of the genus Vernonia, as a deliquescent powder, and used as a mild heart tonic.
Wiktionary
vernonin
n. (context organic compound English) A glucoside extracted from the root of a South African plant of the genus ''Vernonia'', used as a mild heart tonic.