[ bey-zee-uhn, -zhuhn ]

  1. of or relating to statistical methods that regard parameters of a population as random variables having known probability distributions.

Origin of Bayesian

1960–65; Thomas Bayes (1702–61), English mathematician + -ian

Words Nearby Bayesian Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use Bayesian in a sentence

British Dictionary definitions for Bayesian


/ (ˈbeɪzɪən) /

  1. (of a theory) presupposing known a priori probabilities which may be subjectively assessed and which can be revised in the light of experience in accordance with Bayes' theorem. A hypothesis is thus confirmed by an experimental observation which is likely given the hypothesis and unlikely without it: Compare maximum likelihood

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012