Definify.com

Webster 1913 Edition

Adj.

[

Basi-

occipital

(Anat.)

Of or pertaining to the bone in the base of the cranium, frequently forming a part of the occipital in the adult, but usually distinct in the young.

–

Noun.

The basioccipital bone.

basioccipital ‎(not comparable)

(anatomy) Of or pertaining to the base of the occiput (back of the skull) or to the base of the occipital bone.