n. [ Gr. e'ikw`n, e'iko`nos, image + root of gi`gnesqai to be born. ] (Photog. & Chem.) The sodium salt of a sulphonic acid of a naphthol, C10H5(OH)(NH2)SO3Na used as a developer. [ Webster 1913 Suppl. ]
n. [ Gr. e'i`kosi. ] (Chem.) A solid hydrocarbon, C20H42, of the paraffin series, of artificial production, and also probably occurring in petroleum. [ 1913 Webster ]