| dipygus | Conjoined twins with the head and thorax completely merged, and the pelvis and lower extremities duplicated; when the duplications of the lower parts are symmetrical, usually called duplicitas posterior. See: conjoined twins. Origin: G. Di-, two, + pyge, buttocks (05 Mar 2000) |
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| dicephalus dipygus | Anacatadidymus Conjoined twins united in the middle but separated above and below. Synonym: dicephalus dipygus. Origin: G. Ana, up, + kata, down, + didymos, twin (05 Mar 2000) |
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