• Webster's Revised Unabridged Dictionary
    • n Amphigen (Chem) An element that in combination produces amphid salt; -- applied by Berzelius to oxygen, sulphur, selenium, and tellurium.
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Century Dictionary and Cyclopedia
    • n amphigen In botany, a thallogen: a name applied by Brongniart to those cryptogams (the algæ, fungi, and lichens) which increase by development of cellular tissue in all directions, and not at the summit of a distinct axis.
    • n amphigen In chem., an element, like oxygen, capable of forming with other elements acid and basic compounds.
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Webster's Revised Unabridged Dictionary
Gr. + -gen,: cf. F. amphigène,