- Siméon Denis (simeɔ̃ dəni). 1781–1840, French mathematician, noted for his application of mathematical theory to physics, esp electricity and magnetism
Examples from the Web for poisson
"It's becoming serious," declared Poisson, who seldom spoke.
Poisson bowed his head with military stiffness, and moved the goose before him.
Poisson, who had been on board ship nodded his head in approval of the description.
Poisson bit off the end of his pipe twice while gulping and gasping.
Poisson was seized with consternation, and he could not find a word to say in the Emperor's defense.