Amphid \Am"phid\, n. [Gr. 'a`mfw both: cf. F. amphide.]

(Chem.) A salt of the class formed by the combination of an acid and a base, or by the union of two oxides, two sulphides, selenides, or tellurides, as distinguished from a haloid compound. [R.]

--Berzelius.

Source: Webster's Revised Unabridged Dictionary (1913)