Poisson's ratio

noun

: the ratio of transverse to longitudinal strain in a material under tension

Word History

Etymology

S. Poisson

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of Poisson's ratio was in 1866

Dictionary Entries Near Poisson's ratio

poisonwood

Poisson's ratio

poisson bleu

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Cite this Entry

“Poisson's ratio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Poisson%27s%20ratio. Accessed 27 Mar. 2023.

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