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# modulus of elasticity

## noun

,

*Physics.*- any of several coefficients of elasticity of a body, expressing the ratio between a stress or force per unit area that acts to deform the body and the corresponding fractional deformation caused by the stress.

modulus of elasticity

## noun

- the ratio of the stress applied to a body or substance to the resulting strain within the elastic limit Also calledelastic modulus See also Young's modulus bulk modulus modulus of rigidity

modulus of elasticity

- The ratio of the stress applied to a body to the strain that results in the body in response to it. The modulus of elasticity of a material is a measure of its stiffness and for most materials remains constant over a range of stress.
- ◆ The ratio of the longitudinal strain to the longitudinal stress is called
**Young's modulus.** - ◆ The ratio of the stress on the body to the body's fractional decrease in volume is the
**bulk modulus.** - ◆ The ratio of the tangential force per unit area to the angular deformation in radians is the
**shear modulus.** - See also Hooke's law

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## Word History and Origins

Origin of modulus of elasticity^{1}

First recorded in 1800–10

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