The definition of a presumption is an acceptance of something as true without proof, or an attitude of superiority.(noun)
An example of a presumption is someone assuming their opinion is the right one.
See presumption in Webster's New World College Dictionary
Origin: ME < OFr presumpcion < L praesumptio, a taking beforehand < praesumptus, pp. of praesumere: see presume
See presumption in American Heritage Dictionary 4
Origin: Middle English presumpcion
Origin: , from Old French
Origin: , from Late Latin praesūmptiō, praesūmptiōn-
Origin: , from Latin, anticipation
Origin: , from praesūmptus
Origin: , past participle of praesūmere, to anticipate; see presume.
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