Cȳ-ăn′-o-gĕn, n.

n. [Fr. cyanogène, from Gr. κύανος, dark blue, and the root of γεννᾶν, to beget.] (Chem.) A compound radical, being a gas composed of one equivalent of nitrogen and two of carbon. It is an essential ingredient in prussian blue, has an odor like that of crushed peach leaves, and burns with a rich purple flame.