Try Our Apps


Avoid these words. Seriously.


[stuh-kas-tik] /stəˈkæs tɪk/
adjective, Statistics.
of or relating to a process involving a randomly determined sequence of observations each of which is considered as a sample of one element from a probability distribution.
Origin of stochastic
1655-65; < Greek stochastikós, equivalent to stochas- (variant stem of stocházesthai to aim at) + -tikos -tic
Related forms
stochastically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
British Dictionary definitions for stochastic


  1. (of a random variable) having a probability distribution, usually with finite variance
  2. (of a process) involving a random variable the successive values of which are not independent
  3. (of a matrix) square with non-negative elements that add to unity in each row
(rare) involving conjecture
Derived Forms
stochastically, adverb
Word Origin
C17: from Greek stokhastikos capable of guessing, from stokhazesthai to aim at, conjecture, from stokhos a target
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
Cite This Source
Word Origin and History for stochastic

1660s, "pertaining to conjecture," from Greek stokhastikos "able to guess, conjecturing," from stokhazesthai "guess," from stokhos "a guess, aim, target, mark," literally "pointed stick set up for archers to shoot at" (see sting). The sense of "randomly determined" is first recorded 1934, from German stochastik.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
stochastic in Science
  1. Involving or containing a random variable or variables.

  2. Involving chance or probability.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for stochastic

Word Value for stochastic

Scrabble Words With Friends