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
4
: arising from a cause
a causal development
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Merriam-Webster unabridged
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