The fossa is divided into two parts by a narrow slit, the petrotympanic fissure (Glaserian fissure). What is a dental fossa? Fossa definition is - an anatomical pit, groove, or depression. The fossa is located behind the zygomatic process of the frontal bone in the anterior and lateral part of the orbital roof. The other bicuspids have mesial and distal triangular fossa, but do not have a central fossa. Medical Definition of glenoid fossa. In the temporal bone, the mandibular fossa is bounded anteriorly by the articular tubercle and posteriorly by the tympanic portion of the temporal bone, which separates it from the external acoustic meatus. fossa: A rounded or angular depression in the occlusal surface of a posterior tooth bordered by the cusp ridges and the occlusal table. Sometimes used to describe the linguo-middle fossa of a lower second bicuspid.

Definition.

Definition. : the depression in each lateral wall of the skull with which the mandible articulates. A shallow depression found approximately in the middle of the occlusal surface of a molar, bordered by the cusp ridges and the occlusal perimeter. The fossa is bounded by the anterior and posterior lacrimal crests coming from the maxilla (frontal … GROOVE-a linear channel or sulcus DEVELOPMENTAL GROOVE-One of the fine lines found in the enamel of a tooth that mark the junction of the lobes of the crown in its development. central fossa -is a centrally located depression or concavity found on the occlusal surface of molars and mandibular second bicuspids. How to use fossa in a sentence. - Centrally located depression found on the occlusal surface of molars and mandibular second bicuspids. fossa for the lacrimal sac A vertical groove, some 5 mm deep and about 14 mm high, formed by the frontal process of the maxilla and lacrimal bones and which contains the lacrimal sac.

— called also mandibular fossa. The mandibular fossa is the depression in the temporal bone that articulates with the mandible. Also calleddevelopmental line. The fossa is bounded by the anterior and posterior lacrimal crests coming from the maxilla (frontal … fossa for the lacrimal sac A vertical groove, some 5 mm deep and about 14 mm high, formed by the frontal process of the maxilla and lacrimal bones and which contains the lacrimal sac. The fossa is located behind the zygomatic process of the frontal bone in the anterior and lateral part of the orbital roof. A shallow depression found approximately in the middle of the occlusal surface of a molar, bordered by the cusp ridges and the occlusal perimeter.