: either of a pair of bones of the roof of the skull between the frontal bones and the occipital bones
Example Sentences
Recent Examples on the WebOne particularly intriguing feature is the width of the skull between the parietal bones, which make up the sides and upper rear of the skull.National Geographic, 19 Sep. 2019
Word History
First Known Use
15th century, in the meaning defined above
Medical Definition
parietal bone
noun
: either of a pair of membrane bones of the roof of the skull between the frontal and occipital bones that are large and quadrilateral in outline, meet in the sagittal suture, and form much of the top and sides of the cranium