| Noun | 1. | glenoid fossa - a deep concavity in the temporal bone at the root of the zygomatic arch that receives the condyle of the mandible Synonyms: mandibular fossa |
| 2. | glenoid fossa - the concavity in the head of the scapula that receives the head of the humerus to form the shoulder joint Synonyms: glenoid cavity |