Meaning of “presumption” in the English Dictionary

"presumption" in British English

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presumptionnoun [ C or U ]

uk /prɪˈzʌmp.ʃən/ us /prɪˈzʌmp.ʃən/

(Definition of “presumption” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"presumption" in American English

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presumptionnoun

us /prɪˈzʌmp·ʃən/

presumption noun (BELIEF)

[ C ] a belief that something is true because it is likely, although not certain:

There is no scientific evidence to support such presumptions.

presumption noun (RUDENESS)

[ U ] behavior that is rude or shows that you expect too much:

What presumption, to assume that I’d pay for everyone!

(Definition of “presumption” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"presumption" in Business English

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presumptionnoun [ C or U ]

uk /prɪˈzʌmpʃən/ us

LAW the fact of believing that something is true without having any proof:

Every defendant is entitled to the presumption of innocence unless they are proven guilty.
presumption that The decision was based on the presumption that the information that they had been given was correct.

(Definition of “presumption” from the Cambridge Business English Dictionary © Cambridge University Press)