molar

Etymology 1

From Middle English molar, from Latin molāris (“millstone, molar”).

noun

1. A back tooth having a broad surface used for grinding one's food.
   Jamie had a molar removed as it was decaying.

adj

1. Of or relating to the molar teeth, or to grinding.

Etymology 2

From mol(e) + -ar in the chemistry usage.

adj

1. (chemistry) Of, relating to, or being a solution containing one mole of solute per litre of solution.
2. (physics) Of or relating to a complete body of matter as distinct from its molecular or atomic constituents.

noun

1. (chemistry) A unit of concentration equal to one mole per litre.