English edit

Etymology edit

Poisson +‎ -ian

Adjective edit

Poissonian (not comparable)

  1. (mathematics) Of or pertaining to the Poisson distribution.
    • 2006, Mark Fox, Quantum Optics: An Introduction, page 105:
      We saw that the observation of Poissonian and super-Poissonian statistics could be explained by classical wave theory, but not sub-Poissonian statistics.

Noun edit

Poissonian (plural Poissonians)

  1. A Poisson distribution.
    • 2013, Hideki Takayasu, Empirical Science of Financial Fluctuations: The Advent of Econophysics:
      Analysis of the actual data is plotted as a solid line, the corresponding distribution made by superimposing Poissonians is shown as a dotted line, and the exponential decay with same mean interval as the solid line is shown as a dashed line.