# modulus

[ moj-uh-luhs ]

/ ˈmɒdʒ ə ləs /

### noun, plural mod·u·li [moj-uh-ahy]. /ˈmɒdʒ ə aɪ/.

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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## Example sentences from the Web for modulus

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

College Teaching|Paul KlapperThe intensities of the reflected and transmitted lights are the squares of the moduli of these expressions.

## British Dictionary definitions for modulus

modulus

/ (ˈmɒdjʊləs) /

### noun plural -li (-ˌlaɪ)

physics a coefficient expressing a specified property of a specified substanceSee bulk modulus, modulus of rigidity, Young's modulus

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)

## Word Origin for modulus

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

## Scientific definitions for modulus

modulus

[ mŏj′ə-ləs ]

### Plural moduli (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.

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.