a malformed fetus with a double pelvis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Conjoined twins with a single head and thorax and the pelvis and lower extremities duplicated; when the duplications of the lower parts are symmetric, usually called duplicitas posterior. See: conjoined twins.
[G. di-, two, + pyge, buttocks]
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