I. -_ləs noun
( plural moduli -ˌlī)
Etymology: New Latin, from Latin, small measure
1. : a constant or coefficient that expresses numerically the degree in which a property is possessed by a substance or body
2.
a. : the absoute value of a complex number
b. : a number (as a positive integer) or other mathematical entity (as a polynomial) that in a congruence divides the difference of the two congruent members without leaving a remainder
3. capitalized : a genus (the type of the family Modulidae) of thin-shelled, bulbous, operculate marine snails of tropical seas
II. noun
1. : the factor by which a logarithm of a number to one base is multiplied to obtain the logarithm of the number to a new base
2. : the number of different numbers used in a system of modular arithmetic