Path. [mod.L., f. Gr. σύν SYM- + μέλος limb: see -IA1.] A form of monstrosity in which a pair of limbs, esp. the hinder limbs, are fused into one. Hence Symmelian a., characterized by symmelia; sb. an animal so characterized.
1894. Bateson, Study of Variation, I. xviii. 458. In vertebrates such union is especially well known … producing the cyclopic, synotic and symmelian conditions respectively. Ibid., 459. The body of the symmelian ends posteriorly in an elongated lobe made up of parts of the posterior limbs compounded together by homologous parts. Ibid., note. To the determination of the morphology of the hind limb the structure of the symmelian monster is of unique importance.
1901. Dorland, Med. Dict. (ed. 2), Symmelia … fusion of the feet and legs.
