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.
{ Ir`i*dos"mine (?), Ir`i*dos"mi*um (?), } n. [Iridium + osmium.]
(Min.) The native compound of iridium and osmium. It is found in
flattened metallic grains of extreme hardness, and is often used for
pointing gold pens.
I"ris (?), n.; pl. E. Irises (#), L. Irides (#). [L. iris, iridis, the
goddess, Gr. &?;, &?;, the rainbow, iris of the eye, the plant Iris.
Cf. Orris.] 1. (Class. Myth.) The goddess of the rainbow, and
swift-footed messenger of the gods. Shak.