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causality

American  
[kaw-zal-i-tee] / kɔˈzæl ɪ ti /

noun

causalities plural
  1. the relation of cause and effect.

    The result is the same, however differently the causality is interpreted.

  2. causal quality or agency.


causality British  
/ kɔːˈzælɪtɪ /

noun

    1. the relationship of cause and effect

    2. the principle that nothing can happen without being caused

  1. causal agency or quality

"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

Other Word Forms

Etymology

Origin of causality

First recorded in 1595–1605; causal + -ity

Explanation

Causality is the connection between a cause and its result or consequence. It is sometimes hard to figure out the causality of a stomach ache — it could be due to something you ate, or just a result of stress. You'll often find the word causality in scholarly or academic writing. Medical researchers might talk about the causality of various diseases, and a sociologist might study the causality of a childhood in poverty on future trouble in school. This noun comes from the adjective causal, "acting as a cause," from a Latin root, causa, or "cause."

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Vocabulary lists containing causality

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The researchers say these findings show an association, not direct causality.

From The Wall Street Journal • May 21, 2026

Now, “the arrow of causality has flipped” on the view that “AI is killing the jobs first, and that’s what’s making the economy sick.”

From MarketWatch • Feb. 27, 2026

His recent writings in The Wall Street Journal External link , however, exhibit a confidence about money growth and balance sheet causality that exceeds the humility he has emphasized in the past.

From Barron's • Feb. 1, 2026

A paper listed as support for the myocarditis threat, for example, states, “no causality can be assumed or established” linking the condition to the vaccine because of the lack of a control group for comparison.

From Los Angeles Times • Aug. 12, 2025

We cannot pretend to understand what such causality inversion means.

From "Cosmos" by Carl Sagan

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