uromelus

symmelia

 [sim-e´le-ah]
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).
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

uromelus

(u-rom'e-lus) [Gr. oura, tail, + melos, limb]
A congenitally deformed fetus in which the lower extremities are fused. Synonym: sirenomelia
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