Category:Eikonogen

Ei*kon"o*gen, n. [Gr. e'ikw`n, e'iko`nos, image + root of gi`gnesqai to be born.] (Photog. & Chem.)

Defn: The sodium salt of a sulphonic acid of a naphthol, C10H5(OH)(NH2)SO3Na used as a developer.