# modulus of elasticity

(redirected from coefficient of elasticity)
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## mo·du·lus of e·las·tic·i·ty

a coefficient expressing the ratio between stress per unit area acting to deform a body and the amount of deformation that results from it.

## modulus of elasticity

The ratio of a force applied to a material to the increment of change (e.g. increase in length; angular deformation) in that material. Materials with low modulus of elasticity are less resistant to stress, while materials with high modulus of elasticity resist stress and hold their shape better. The SI unit of modulus of elasticity E is the pascal (Pa). Examples: the modulus of elasticity of a PMMA contact lens is about 3000 MPa, it is around 0.4 to 1.5 MPa for silicone hydrogel lenses and 0.3 to 0.5 MPa for hydrogel lenses. Syn. coefficient of elasticity; Young's modulus of elasticity.
References in periodicals archive ?
The thing to remember, therefore, is that in order to derive an unequivocal coefficient of elasticity we must first derive the equation of the demand curve, or the law of demand.
where [gamma] is the coefficient of elasticity of adjustment and its value is expected to lie between zero and unity.
where [theta] is the coefficient of elasticity of adjustment, and its value is expected to lie between zero and unity, and U3 is the disturbance term.
where [partial derivative]1 is the coefficient of elasticity of adjustment, and its value is expected to lie between zero and unity, and U4 is the disturbance term.
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