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
