(1) The mandibular fossa; a depression in the temporal bone that articulates with the condyle of the mandible and is divided into two parts by a slit (i.e. the petrotympanic fissure).
(2) A shallow, pyriform, articular surface on the scapula that articulates with the head of the humerus to make the shoulder joint.
Word origin: from Greek: gléne, "socket"
Also called: glenoid cavity
Synonym: mandibular fossa