The masseteric nerve is a nerve that originates from the trigeminal nerve and provides innervation to the masseter muscle which is responsible for chewing and elevating the mandible. There are various synonyms for the masseteric nerve such as the nerve to the masseter muscle, masseteric branch, and the masseteric nerve of the mandibular nerve. In anatomy, different names are given to a structure based on the location, function, and relationships with nearby structures. The masseteric nerve is an essential nerve in the head and neck region, and its synonyms help to describe its anatomical location and function.