The upper border of the ramus of mandible is thin, and is surmounted by two processes, the coronoid process anteriorly and the condyloid process posteriorly, separated by a deep concavity, the mandibular notch, or sigmoid notch. It allows the passage of the masseteric nerve (a branch of the mandibular nerve (V3) division of the trigeminal nerve), ...
The deep notch between the condylar and coronoid processes of the mandible. ... Synonym: incisura mandibulae, sigmoid notch. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. the deep notch between the condylar and coronoid processes of the mandible. Synonyms: incisura mandibulae, sigmoid notch
[n] - small indentation in the middle of the lower jawbone
noun small indentation in the middle of the lower jawbone