cau·​sal·​i·​ty | \ kȯ-ˈza-lə-tē How to pronounce causality (audio) \
plural causalities

Definition of causality

1 : a causal quality or agency
2 : the relation between a cause and its effect or between regularly correlated events or phenomena

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Examples of causality in a Sentence

Scientists found no causality between the events. a supreme being is a being that, by definition, has no causality of its own
Recent Examples on the Web The light cones of events become indefinite — and thus, so does causality itself. Quanta Magazine, 11 Mar. 2021 And though the findings seem to support the idea that trauma did, in fact, lead to changes in future generations, critics have noted small sample sizes, exaggeration of causality and media sensationalism as reasons to doubt them. Washington Post, 19 July 2021 The website of the Dutch registry clearly notes its reports do not imply causality. Meredith Wadman, Science | AAAS, 1 July 2021 Machines, however, notoriously struggle with causality and can’t generalize far beyond the data on which they are trained. Forbes, 29 June 2021 Over time, the various fuels’ prices ceased to move together, reminding us that correlation does not prove causality. Michael Lynch, Forbes, 11 June 2021 Time is the lord of causality: a cause produces an effect and therefore precedes it. Claudio Magris, Harper's Magazine, 25 May 2021 Even more complicated is the time causality element. Michael Feindt, Forbes, 26 May 2021 Yet another causality of COVID-19 was Brooklyn’s new Safety Town program, which a year after it was supposed to debut will come to fruition this summer. John Benson, cleveland, 31 Mar. 2021

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

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First Known Use of causality

1603, in the meaning defined at sense 1

History and Etymology for causality

borrowed from Medieval Latin causālitāt- causālitās, from Late Latin causālis causal + Latin -itāt-, -itās -ity

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Learn More About causality

Time Traveler for causality

Time Traveler

The first known use of causality was in 1603

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Dictionary Entries Near causality



causal necessity

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Statistics for causality

Last Updated

19 Sep 2021

Cite this Entry

“Causality.” Dictionary, Merriam-Webster, Accessed 19 Sep. 2021.

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More Definitions for causality



English Language Learners Definition of causality

: the relationship between something that happens or exists and the thing that causes it
: the idea that something can cause another thing to happen or exist


cau·​sal·​i·​ty | \ kȯ-ˈza-lə-tē How to pronounce causality (audio) \
plural causalities

Legal Definition of causality

: the relationship between cause and effect

More from Merriam-Webster on causality

Nglish: Translation of causality for Spanish Speakers

Britannica English: Translation of causality for Arabic Speakers Encyclopedia article about causality


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