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READ THESE ARTICLES# Definition of *modulus* in English:

## modulus

### nounmoduli

1Mathematics

another term for absolute value- 1.1The positive square root of the sum of the squares of the real and imaginary parts of a complex number.
*‘The concept of the modulus of a complex number is also due to Argand but Cauchy, who used the term later, is usually credited as the originator this concept.’*

- 1.1The positive square root of the sum of the squares of the real and imaginary parts of a complex number.
2Physics

A constant factor or ratio.*‘Such a material can be characterized by simple moduli (ratios of stress to strain): Young's modulus, E, and Poisson's ratio,.’**‘For example, in this case, it is easier to try to factor the modulus N than to perform an exhaustive key search on all possible decryption keys.’**‘A cost from a cost function is calculated according to a constant modulus algorithm.’**‘Thus, they are characterized by two elastic constants, Young modulus E and Poisson ratio v.’*

- 2.1A constant representing the degree to which a substance has a particular property, especially elasticity.
*‘While heat treatment had little, if any effect of the modulus of elasticity of the composites, it did affect the transition into plastic flow.’**‘The crosshatched regions in Fig.1 indicate the modulus of resilience for each steel.’**‘Flexible carbon fiber electrode with low modulus and high electrical conductivity, battery employing the carbon fiber electrode, and method of manufacture’**‘The modulus of elasticity in shear, or modulus of rigidity, is about 16 GPa, while Poisson's ratio is 0.35.’**‘It is interesting to note that a considerable group of important structural materials have nearly the same ratio of modulus of elasticity to density.’*

3Mathematics

A number used as a divisor for considering numbers in sets, numbers being considered congruent when giving the same remainder when divided by a particular modulus.*‘This is known as using arithmetic modulo 26, and 26 is known as the modulus.’**‘Daemen and Rijmen picked x 8 + 1 as the modulus polynomial because it was simple-as simple as one could get.’**‘His first notebook was on hypergeometric series, continued fractions, singular moduli, and many branches of number theory.’*

**Origin**

Mid 16th century (denoting an architectural unit of length): from Latin, literally ‘measure’, diminutive of modus.

**Pronunciation**

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