Main Entry: infratemporal fossa Function: noun : a fossa that is bounded above by the plane of the zygomatic arch, laterally by the ramus of the mandible, and medially bythe pterygoid plate, and that contains the masseter and pterygoid muscles and the mandibular nerve
infratemporal fossan. The cavity on the side of the skull bounded laterally by the zygomatic arch and by the ramus of the mandible. Also called zygomatic fossa.
