scaphocephaly

or scaph·o·ceph·a·lism

[skaf-uh-sef-uh-lee]
noun Pathology.
  1. premature closure of the sagittal suture resulting in a deformed skull having an elongated, keellike shape.

Origin of scaphocephaly

First recorded in 1900–05; scapho- + -cephaly
Also called cymbocephaly.
Related formsscaph·o·ce·phal·ic [skaf-oh-suh-fal-ik] /ˌskæf oʊ səˈfæl ɪk/, scaph·o·ceph·a·lous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for scaphocephalic

scaphocephalic

adjective
  1. anatomy having a head that is abnormally long and narrow as a result of the two parietal bones on the top of the skull closing prematurely
  2. an individual with such a headCompare dolichocephalic, brachycephalic
Derived Formsscaphocephaly or scaphocephalism, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

scaphocephalic in Medicine

scaphocephalic

[skăf′ō-sə-fălĭk]
adj.
  1. Having an abnormally long, narrow skull.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.