or Poisson ratio
- the ratio, in an elastic body under longitudinal stress, of the transverse strain to the longitudinal strain.
Origin of Poisson's ratio
First recorded in 1925–30; see origin at Poisson distribution
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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 stretchedSymbol: μ, ν