Definitions

1. noun

A unit of measurement, especially for molarity in chemistry, equal to one million liters of solution per kilogram of solute.

“The chemist added a specified amount of sodium chloride to the solution, measured in moles.”

2. noun

A unit of measurement for the mass of an atom or molecule, especially in the International System of Units.

“The mass of the atom was calculated using moles of the substance.”

3. noun

A type of volcanic rock formation.

“The geologist studied the unique mol formations in the ancient volcano.”