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English definition of “assertion”

assertion

noun [C + that] uk   /əˈsɜː.ʃən/ us    /-ˈsɝː-/
a statement that you strongly believe is true: I certainly don't agree with his assertion that men are better drivers than women.Assertions and asserting
(Definition of assertion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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