Iridoline \I*rid"o*line\, n. [Iridescent + L. oleum oil.] (Chem.) A nitrogenous base {C10H9N}, extracted from coal-tar naphtha, as an oily liquid. It is a member of the quinoline series, and is probably identical with {lepidine}. Iridosmine
Lepidine \Lep"i*dine\ (l[e^]p"[i^]*d[i^]n or *d[=e]n), n. (Chem.) An organic base, {C9H6.N.CH3}, metameric with quinaldine, and obtained by the distillation of cinchonine. [1913 Webster]