Mo"lar (?), a. [L. moles mass.] (Mech.) Of or pertaining to a mass of matter; -- said of the properties or motions of masses, as distinguished from those of molecules or atoms. Carpenter.

Mo"lar, a. [L. molaris, fr. mola mill, fr. molere to grind in a mill. See Mill the machine.] Having power to grind; grinding; as, the molar teeth; also, of or pertaining to the molar teeth. Bacon.

Mo"lar, n. (Anat.) Any one of the teeth back of the incisors and canines. The molars which replace the deciduous or milk teeth are designated as premolars, and those which are not preceded by deciduous teeth are sometimes called true molars. See Tooth.

• a back tooth having a broad surface used for grinding one's food.