Vernonin

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.
     [1913 Webster]