"grinding tooth," mid-14c., from Latin molaris dens "grinding tooth," from mola "millstone," from PIE root *mel- "to rub, grind" (see mill (n.1)). As an adjective in this sense from 1620s. In Old English they were cweornteð "quern-teeth."
molar mo·lar1 (mō'lər)
adj.
Relating to or being a solution that contains one mole of solute per liter of solution.
Of, relating to, or characterizing the physical properties of a body of matter as a whole, especially the mass of a body, as opposed to the molecular or atomic properties.
Abbr. M Of, relating to, or being a solution whose concentration is expressed as moles of solute per liter of solution.
Containing one mole of a substance.
molar 2
n.
A tooth having a crown with three, four, or five cusps on the grinding surface, a bifid root in the lower jaw, and three conical roots in the upper jaw. In permanent dentition, there are three on either side behind the premolars; in deciduous dentition, there are two on either side behind the canines. adj.
Of or relating to the molars.
Capable of grinding.
The teeth with broad surfaces at the back of the mouth that serve to grind food. Including the wisdom teeth, adults have twelve molars — six on the top and six on the bottom. (Compare incisors and canines.)