a developmental anomaly marked by a steplike posterior projection of the skull, caused by excessive growth of the lambdoid suture.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
bathrocephalyA congenital cranial malformation consisting of a shelf-like projection at the base of the skull caused by hyperostosis of the squamous suture of the occiput, at least some cases of which would now be designated as platybasia.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.