retromolar fossa

ret·ro·mo·lar fos·sa

[TA] a triangular depression in the mandible posterior to the third molar tooth. Synonym(s): fossa retromolaris [TA]

ret·ro·mo·lar fos·sa

(retrō-mōlăr fosă) [TA] Triangular depression in mandible posterior to third molar tooth.