The Collaborative International Dictionary
Xanthogen
Xanthogen \Xan"tho*gen\, n. [Xantho- + -gen.] (Chem.)
The hypothetical radical supposed to be characteristic of xanthic acid. [Archaic]
Persulphocyanogen. [R.]
Wiktionary
xanthogen
n. (context chemistry dated English) Formerly, a hypothetical radical supposed to be characteristic of xanthic acid.