The term is a modern anatomical compound, constructed in the 19th century from classical Latin roots to achieve precise scientific description. The first element, temporo-, derives from Latin tempus (genitive temporis), which originally meant "time" but came to refer to the temple of the head, perhaps because this is where time shows its effects (grey hair) or where the pulse is felt marking time. The second element, mandibular, originates from Latin mandere meaning "to chew." Thus, the word literally and logically describes the anatomical junction "of the temple and the jaw," specifically denoting the complex hinge and sliding joint that facilitates chewing and speech.

Structure: temporo (temporal) + mandibular (mandible) - temporo: From Latin tempora (the temples, sides of the forehead), referring to the temporal bone. In this word, it functions as a combining form meaning "relating to the temporal region." - mandibular: From Latin mandibula (jaw), via the adjective mandibularis. In this word, it functions as the core adjective meaning "relating to the jaw."