gastromelus

A condition in which an individual has a supernumerary limb attached to the abdomen. See conjoined twins, under twin. [gastro- + G. melos, a limb]

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gas·trom·e·lus (gas-tromґə-ləs) [gastro- + Gr. melos limb] a fetus with a supernumerary lower limb attached to the abdomen.