parietal bone

American  

noun

Anatomy.

1. either of a pair of membrane bones forming, by their union at the sagittal suture, part of the sides and top of the skull.

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parietal bone British  

noun

1. either of the two bones forming part of the roof and sides of the skull

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Etymology

Origin of parietal bone

First recorded in 1695–1705

Example Sentences

He hopes that the other pieces of the parietal bone, or even a complete skull, might soon be found.

From Nature • Feb. 26, 2019

Archaeologists excavating Denisova Cave in 2016 discovered a freshly broken chunk of parietal bone — part of the skull — that contains mitochondrial DNA from a Denisovan.

From Nature • Feb. 26, 2019

Each parietal bone is also bounded anteriorly by the frontal bone, inferiorly by the temporal bone, and posteriorly by the occipital bone.

From Textbooks • Jun. 19, 2013

At the intersection of four bones is the pterion, a small, capital-H-shaped suture line region that unites the frontal bone, parietal bone, squamous portion of the temporal bone, and greater wing of the sphenoid bone.

From Textbooks • Jun. 19, 2013

The most pronounced change in the position of these centres may be witnessed in cases where the parietal bone shows a perfect vertical instead of a horizontal suture.

From A Bilateral Division of the Parietal Bone in a Chimpanzee; with a Special Reference to the Oblique Sutures in the Parietal by Hrdlička, Aleš