DENTAL, adjective Pertaining to the teeth. In grammar, formed or pronounced by the teeth, with the aid of the tongue; as, D and T are dental letters. DENTAL, noun 1. An articulation or letter formed by placing the end of the tongue against the upper teeth, or against the gum that covers the root of the upper teeth, as D, T, and Th. 2. A genus of shell-fish, Dentalium, of several species. The shell consists of one tubulous straight valve, open at both ends.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI