What is "exoccipital"

Exoccipital \Ex`oc*cip"i*tal\, a. [Pref. ex- + occipital.] (Anat.) Pertaining to a bone or region on each side of the great foremen of the skull. -- n. The exoccipital bone, which often forms a part of the occipital in the adult, but is usually distinct in the young. ||

a. Pertaining to a bone or region on each side of the great foremen of the skull. n. Such a bone