Webster’s Revised Unabridged Dictionary · 1913
Polymorph
Pol′y·morph (pŏl′ĭ·môrf), n. [Gr. πολύμορφος multiform; πολύς many + μορφή form: cf. F. polymorphe.] (Crystallog.) A substance capable of crystallizing in several distinct forms; also, any one of these forms. Cf. Allomorph.