# Shear Modulus

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## shear modulus

[′shir ‚mäj·ə·ləs] (mechanics)

## Shear Modulus

(or rigidity modulus), a quantity characterizing shearing deformation. It is equal to the ratio of the shearing stress τ and the shearing angle γ (shearing strain). (*See also*MODULI OF ELASTICITY.)

## modulus of rigidity, modulus of shear

In an elastic material which has been subjected to stress, the ratio of the shearing stress to the shearing strain.