Ei‐kon″o‐gen (?), n. [Gr. εικὤν, εικὄνοσ, image + root of γίγνεσθαι to be born.] (Photog. & Chem.) The sodium salt of a sulphonic acid of a naphthol, C10H5(OH)(NH2)SO3Na used as a developer.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.