The Collaborative International Dictionary
Amphigen
Amphigen \Am"phi*gen\, n. [Gr. ? + -gen: cf. F. amphig[`e]ne.] (Chem.) An element that in combination produces amphid salt; -- applied by Berzelius to oxygen, sulphur, selenium, and tellurium. [R.]
Wiktionary
amphigen
n. (context chemistry obsolete English) An element that in combination produces amphid salt; applied by (w: Jöns Jacob Berzelius) to oxygen, sulphur, selenium, and tellurium.