Definitions

1. adjective

relating to or situated before the basal part of an organ or structure, especially the base of the skull or a part of the ear.

“The prebasilar part of the skull houses the internal carotid artery.”

2. noun

the prebasilar region of the ear, especially the part of the ear between the external auditory meatus and the tympanic membrane.

“The otolaryngologist examined the prebasilar region of the patient’s ear.”

3. noun

the prebasilar space or recess in the skull or ear, especially the space between the petrous part of the temporal bone and the anterior part of the temporal bone.

“The doctor carefully explored the prebasilar space to locate the tumor.”