2
: of, relating to, or constituting a cause
the causal agent of a disease
3
: involving causation or a cause : marked by cause and effect
a causal link
evidence suggests that there is a strong causal relationship between an individual's experiences with his parents and his later capacity to make affectional bonds—
G. A. Miller
G. A. Miller4
: arising from a cause
a causal development
Examples of causal in a Sentence
No causal connection between the events was found.
There is a causal link between poverty and crime.
Recent Examples on the Web
The bulk of scientific evidence suggests moderate Tylenol use is safe in pregnancy, and many autism researchers say data does not support a causal link to autism.
—Aria Bendix, NBC news, 11 Oct. 2025
In subgroup analyses, the researchers did not find a causal relationship between bone density and specific teas, including green and herbal tea.
—Lauren Manaker Ms, Verywell Health, 10 Oct. 2025
Still, there is not a causal relationship between meal times and mortality.
—Alexa Mikhail, Flow Space, 24 Sep. 2025
Steier said that at this point, there is no evidence of any causal link between acetaminophen use in kids and autism.
—Sony Salzman, ABC News, 23 Sep. 2025
See All Example Sentences for causal
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Aria Bendix, NBC news, 11 Oct. 2025
In subgroup analyses, the researchers did not find a causal relationship between bone density and specific teas, including green and herbal tea.
—Lauren Manaker Ms, Verywell Health, 10 Oct. 2025
Still, there is not a causal relationship between meal times and mortality.
—Alexa Mikhail, Flow Space, 24 Sep. 2025
Steier said that at this point, there is no evidence of any causal link between acetaminophen use in kids and autism.
—Sony Salzman, ABC News, 23 Sep. 2025
See All Example Sentences for causal
Cite this Entry
“Causal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/causal. Accessed 27 Oct. 2025.
Copy CitationKids Definition
causal
adjective
caus·al
ˈkȯ-zəl 
: of, relating to, or being a cause
Legal Definition
causal
adjective
caus·al
ˈkȯ-zəl
1
: of, relating to, or constituting a cause
causal negligence
2
: involving causation or a cause
no causal relationship between driving without insurance and the accident—National Law Journal
National Law Journala causal link exists between the deceptive act and the injury—National Law Journal
National Law Journal3
: arising from a cause
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