poissons ratio

Poisson's ratio

noun Physics.
the ratio, in an elastic body under longitudinal stress, of the transverse strain to the longitudinal strain.
Also, Poisson ratio.


Origin:
1925–30; see Poisson distribution

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Poisson's ratio
 
n
μ, ν a measure of the elastic properties of a material expressed as the ratio of the fractional contraction in breadth to the fractional increase in length when the material is stretched

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