Medical Dictionary

holoprosencephaly hol·o·pros·en·ceph·a·ly (hŏl'ō-prŏs'ěn-sěf'ə-lē, hō'lō-)
Failure of the forebrain to divide into hemispheres or lobes causing insufficient development of facial characteristics such as the nose, lips, and palate; in severe cases, cyclopia can occur.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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