[mod. L. a. Gr. θηρομορφία = θηριομορφία, f. θηριόμορφος having the form of a beast: see prec.] (See quot. 1890.) So Theromorphic a.2, of or pertaining to theromorphia; Theromorphism = theromorphia.
1890. Billings, Nat. Med. Dict., Theromorphia, an abnormity in human anatomy resembling the normal structure in lower animals.
1891. Cent. Dict., Theromorphic.
1899. Syd. Soc. Lex., Theromorphism, an apparent reversion to an animal of lower type in the human subject.
