A sirenomelus in which the fusion of the legs has extended to involve the feet. ... Origin: G. Sympous, fr. Sym-+ pous, foot ... (05 Mar 2000) ... 
(sim´pәs) a malformed fetus with sympodia.
Type: Term Pronunciation: sim′pŭs Definitions: 1. An individual in which the legs and feet are united in the midline.
sympus A developmental anomaly characterized by an apparent fusion of the lower limbs; especially, the feet. Symmelia in which there may be three feet (tripodial sympus), two feet (dipodial sympus), one foot (monopodial sympus), or no feet (apodal sympus or sirenomelia).