Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to triangular ridge: Oblique ridge, transverse ridge
a crest or ridge that extends from the apex of a cusp of a premolar or molar tooth toward the central part of the occlusal surface.
tri·an·gu·lar ridge(trī-ang'gyū-lăr rij) [TA]
An elevation that descends from the cusp tips of premolars and molars toward the central grooves and fossae of the crown.