cranial segment

noun

Definition of cranial segment

: any of three annular segments into which the bones of the cranium proper may be grouped:
a : an occipital segment consisting of the basioccipital, exoccipital, and supraoccipital bones
b : a parietal segment consisting of the basisphenoid, alisphenoid, and parietal bones
c : a frontal segment consisting of the presphenoid, orbitosphenoid, and frontal bones

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“Cranial segment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cranial%20segment. Accessed 15 Jan. 2021.

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