a. [f. L. aur-um gold + -OUS.] Of or containing gold. Applied in Chem. to compounds in which gold combines as a monad, e.g., Aurous iodide Au I, Aurous oxide, Au2O.
1862. Pepper, Play-bk. Metals, 201. Purple of Cassius, termed by Gmelin stannate of aurous oxide.
1876. Harley, Mat. Med., 307. Aurous iodide is a greenish-yellow powder.
