- either of a pair of membrane bones forming, by their union at the sagittal suture, part of the sides and top of the skull.
Origin of parietal bone
First recorded in 1695–1705
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- either of the two bones forming part of the roof and sides of the skull
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
- Either of two irregularly quadrilateral bones between the frontal and occipital bones that together form the sides and top of the skull.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.