(anatomy) A depression on the front of the maxilla above the incisor teeth.

plural of infratemporal fossa

(anatomy) A fossa that is bounded above by the plane of the zygomatic arch, laterally by the ramus of the mandible, and medially by the pterygoid plate, and that contains the masseter and pterygoid muscles and the mandibular nerve.

plural of pyriform fossa

plural of piriform fossa

(anatomy) Synonym of piriform sinus.

(anatomy) Alternative spelling of piriform fossa.

plural of pterygopalatine fossa

plural of sphenopalatine fossa

plural of sphenomaxillary fossa