# modulus

[moj-uh-luh s]

- Physics. a coefficient pertaining to a physical property.
- Mathematics.
- that number by which the logarithms in one system are multiplied to yield the logarithms in another.
- a quantity by which two given quantities can be divided to yield the same remainders.
- absolute value.

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## Origin of modulus^{}

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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for moduli

### Historical Examples

#### The intensities of the reflected and transmitted lights are the squares of the moduli of these expressions.

#### The moduli of Young and of simple rigidity lend themselves readily to quantitative laboratory experiments.

College TeachingPaul Klapper

## modulus

- physics a coefficient expressing a specified property of a specified substanceSee bulk modulus, modulus of rigidity, Young's modulus
- maths the absolute value of a complex numberSee absolute value
- maths the number by which a logarithm to one base is multiplied to give the corresponding logarithm to another base
- maths an integer that can be divided exactly into the difference between two other integers7 is a modulus of 25 and 11 See also congruence (def. 2)

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## Word Origin

C16: from Latin, diminutive of modus measure

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## modulus

[mŏj′ə-ləs]

- 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.

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The American Heritage® Science Dictionary
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