(anatomy, neuroanatomy) A rhombus-shaped depression that is the anterior part of the fourth ventricle of the brain

plural of suprainiac fossa

(anatomy) A depression on the occipital below the inion.

plural of popliteal fossa

plural of nasal fossa

plural of glenoid fossa

(anatomy) A small triangular space beneath the apex of the orbit that is bounded above by the sphenoid bone and the orbital process of the palatine bone, in front by the maxilla, medially by the palatine bone, and behind by the pterygoid process of the sphenoid bone and that contains among other structures the pterygopalatine ganglion.

(anatomy) Synonym of piriform sinus.

(anatomy) Alternative spelling of piriform fossa.

plural of piriform fossa