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

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 Other research suggests girls who engage with princess media display more gender-typical behaviors and attitudes, but the direction of causality is unclear. Stephanie H. Murray, The Week, 19 July 2022 But because depression can itself be a sign of cognitive decline, the causality has been a bit muddy. Claudia Wallis, Scientific American, 15 June 2022 Since the late Nineties, many researchers have believed the downward trend to be in part attributable to the obesity epidemic, and this idea has remained sticky though the causality is uncertain. Madeleine Watts, Harper’s Magazine , 25 May 2022 The child understands the passage of time and causality: The blocks must be stacked up before they can be knocked down. Charles Simon, Forbes, 4 May 2022 In addition, determining causality in cancer remains a complex task. Viviane Callier, Scientific American, 26 Apr. 2022 This is where larger-scale studies are required and preferably studies that attempt to randomize treatment conditions so that some degree of causality can be figured out. Shane O'mara, Outside Online, 13 May 2020 Russia’s moon cooperation plans are yet another space causality of the country’s ongoing attack against Ukraine. Leonard David, Scientific American, 25 Apr. 2022 Stankovic is quick to acknowledge that personal stories do not prove causality. NBC News, 20 Mar. 2022 See More

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.

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

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

2 Aug 2022

Cite this Entry

“Causality.” Dictionary, Merriam-Webster, Accessed 19 Aug. 2022.

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More Definitions for causality


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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