(maths) the absolute value of a complex number See absolute value
3.
(maths) the number by which a logarithm to one base is multiplied to give the corresponding logarithm to another base
4.
(maths) an integer that can be divided exactly into the difference between two other integers: 7 is a modulus of 25 and 11 See also congruence (sense 2)
Word Origin
C16: from Latin, diminutive of modus measure
modulus in Science
modulus
(mŏj'ə-ləs) Pluralmoduli (mŏj'ə-lī')
A number by which two given numbers can be divided and produce the same remainder.
The numerical length of the vector that represents a complex number. For a complex number a + bi, the modulus is the square root of (a2 + b2).
The number by which a logarithm to one base must be multiplied to obtain the corresponding logarithm to another base.