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Poisson

British  
/ pwasɔ̃ /

noun

  1. Siméon Denis (simeɔ̃ dəni). 1781–1840, French mathematician, noted for his application of mathematical theory to physics, esp electricity and magnetism

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Even though the inner core is solid, it behaves like a softened metal, slowing seismic shear waves and displaying a Poisson's ratio more similar to butter than to steel.

From Science Daily

By pairing in-situ sound velocity measurements with advanced molecular dynamics simulations, the team detected a dramatic loss of shear wave speed and a sharp increase in Poisson's ratio.

From Science Daily

The behavior of elastic materials is partially described by Poisson's ratio, which explains how the material changes shape when you stretch or squeeze it in one direction.

From Science Daily

Most materials have a positive Poisson's ratio, which means squeezing them in one direction will make them wider and/or thicker in other directions.

From Science Daily

Auxetics have a negative value of Poisson's ratio and do exactly the reverse.

From Science Daily