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English definition of “presumption”

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presumption

noun [C or U] uk   /prɪˈzʌmp.ʃən/ us  
C1 the act of believing that something is true without having any proof: The presumption of innocence is central to American law. There is no scientific evidence to support such presumptions. [+ that] The decision is based on the presumption that all information must be freely available.
(Definition of presumption from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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