a. Chem. [f. L. argent-um silver + -OUS.] Containing silver in composition; applied to compounds containing silver in twice the proportion of that in those called argentic, as Argentous Chloride, Ag2Cl; Argentous Oxide, Ag4O, suboxide or hemioxide of silver.
1869. Roscoe, Elem. Chem., 273. A small quantity of argentous chloride.
