Webster’s Revised Unabridged Dictionary · 1913
Amphid
Am′phid (ăm′fĭd), n. [Gr. ἄμφω 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.