- pygomelus
- Unequal conjoined twins in which the parasite is represented by a fleshy mass, or by a more fully developed limb, attached to the sacral or coccygeal region of the autosite. See conjoined twins, under twin. [pygo- + G. melos, part]
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py·gom·e·lus (pi-gomґə-ləs) [pygo- + Gr. melos limb] a fetus with a supernumerary limb or limbs attached to or near the buttock.
Medical dictionary. 2011.