Synonym: sirenomelia. ... Origin: sym-+ G. Melos, limb ... (05 Mar 2000) ... 
(sĭ-me´le-ә) a developmental anomaly characterized by apparent fusion of the lower limbs. There may be three feet (tripodial symmelia), two feet (dipodial symmelia), one foot (monopodial symmelia), or no feet (apodal symmelia or sirenomelia).
Type: Term Pronunciation: si-mē′lē-ă Synonyms: sirenomelia
symmelia An abnormal condition in which there may be three feet (tripodial sympus), two feet (dipodial sympus), one foot (monopodial sympus), or no feet (apodal sympus or sirenomelia).