Etymology

Poisson

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Today it means: The Poisson distribution. Full definition →

French Poisson
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The story

  1. French · borrowed fromPoisson
  2. English todayPoisson

Unadapted borrowing from French Poisson. The noun sense is named after French mathematician Siméon Denis Poisson (1781–1840).

Etymology from Wiktionary, CC BY-SA 4.0.