Statistics a frequency distribution that may be regarded as an approximation of the binomial distribution when the number of events becomes large and the probability of success becomes small
Origin:
after S. D. Poisson (1781-1840), Fr mathematician
See Poisson distribution in American Heritage Dictionary 4
noun Statistics
A probability distribution which arises when counting the number of occurrences of a rare event in a long series of trials.
Origin:
Origin: After Siméon Denis Poisson (1781-1840), French mathematician