sto·​chas·​tic | \ stə-ˈka-stik How to pronounce stochastic (audio) , stō- \

Definition of stochastic

1 : random specifically : involving a random variable a stochastic process
2 : involving chance or probability : probabilistic a stochastic model of radiation-induced mutation

Keep scrolling for more

Other Words from stochastic

stochastically \ stə-​ˈka-​sti-​k(ə-​)lē How to pronounce stochastic (audio) \ adverb

Examples of stochastic in a Sentence

Recent Examples on the Web The 12-week slow stochastic reading is overbought at 81.17. Richard Henry Suttmeier, Forbes, "Major Averages Begin March With Weekly Chart Warnings," 2 Mar. 2021 Lee and Vempala’s paper introduced Chen to the idea of stochastic localization. Quanta Magazine, "Statistics Postdoc Tames Decades-Old Geometry Problem," 1 Mar. 2021 But in the valley, a whole bunch of new stochastic mutations are likely to be high performers against the immune system and living conditions of the ferret. Adam Rogers, Wired, "The Raging Evolutionary War Between Humans and Covid-19," 1 Mar. 2021 In her writing, Rooney brings torturous precision to her depiction of Marianne and Connell’s stochastic courtship. Hannah Giorgis, The Atlantic, "The 15 Best TV Shows of 2020," 12 Dec. 2020 This was not planned, but was rather the result of myriad colliding stochastic evolutions: state formation and the state’s monopoly over violence, urbanization, the growing differentiation of occupations in increasingly complex economies. Aaron Timms, The New Republic, "Privacy Policy," 27 Jan. 2020 This happens because, in each iteration of stochastic gradient descent, more or less accidental correlations in the training data tell the network to do different things, dialing the strengths of its neural connections up and down in a random walk. Quanta Magazine, "New Theory Cracks Open the Black Box of Deep Learning," 21 Sep. 2017 The stochastic Turing mechanism potentially addresses both questions. Jennifer Ouellette, Quanta Magazine, "A Math Theory for Why People Hallucinate," 30 July 2018 That led Impossible to implement a new planning system, stochastic modeling, that factors in large fluctuations in demand. CNN, "Impossible made fake meat a hot commodity. Now it could be a victim of its own success," 27 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'stochastic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of stochastic

1934, in the meaning defined at sense 1

History and Etymology for stochastic

Greek stochastikos skillful in aiming, from stochazesthai to aim at, guess at, from stochos target, aim, guess — more at sting

Keep scrolling for more

Learn More about stochastic

Time Traveler for stochastic

Time Traveler

The first known use of stochastic was in 1934

See more words from the same year

Statistics for stochastic

Last Updated

5 Mar 2021

Cite this Entry

“Stochastic.” Dictionary, Merriam-Webster, Accessed 5 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Keep scrolling for more

More Definitions for stochastic


sto·​chas·​tic | \ stə-ˈkas-tik How to pronounce stochastic (audio) , stō- How to pronounce stochastic (audio) \

Medical Definition of stochastic

1 : involving a random variable a stochastic process
2 : involving chance or probability a stochastic model of radiation-induced mutation

Other Words from stochastic

stochastically \ -​ti-​k(ə-​)lē How to pronounce stochastic (audio) \ adverb

More from Merriam-Webster on stochastic

Britannica English: Translation of stochastic for Arabic Speakers

Comments on stochastic

What made you want to look up stochastic? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Who Knew?

Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!