Modulus

A quantity or coefficient, or constant, which expresses the measure of some specified force, property, or quality, as of elasticity, strength, efficiency, etc.; a parameter.

(physics) a coefficient that expresses how much of a specified property is possessed by a specified substance

the absolute value of a complex number

an integer that can be divided without remainder into the difference between two other integers; "2 is a modulus of 5 and 9"