- Temporal bone
- A large irregular bone situated at the base and side of the skull. The temporal bone consists of three parts (squamous, tympanic and petrous) which are distinct at birth but then fuse. The petrous part of the temporal bone contains the vestibulocochlear organ of the inner ear. The temporal bone articulates (joins) with the sphenoid, parietal, occipital, and zygomatic (cheek) bones. It is connected via the temporomandibular (TM) joint with the mandible (the jaw bone).
* * *temporal bone n a compound bone of the side of the skull that has four principal parts including the squamous, petrous, and tympanic portions and the mastoid process
* * *either of a pair of bones of the cranium. The squamous portion forms part of the side of the cranium. The petrous part contributes to the base of the skull and contains the middle and inner ears. Below it are the mastoid process, styloid process, and zygomatic process (see zygomatic arch). See also skull.
* * *os temporale.
Medical dictionary. 2011.