as•ser•tion (ə sûr′ shən), n. a positive statement or declaration, often without support or reason: a mere assertion; an unwarranted assertion. an act of asserting. Nov 25, 2025 · By surface analysis, assert +‎ -ion. assertion (countable and uncountable, plural assertions) The act of asserting; positive declaration or averment. You're a man of strong assertions! There are five meanings listed in OED's entry for the noun assertion, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

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Definition of assertion noun from the Oxford Advanced Learner's Dictionary. [countable] a statement saying that you strongly believe something to be true synonym claim. He was correct in his assertion. assertion (əˈsɜːʃən) n 1. a positive statement, usually made without an attempt at furnishing evidence 2. the act of asserting ASSERTION definition: a positive statement or declaration, often without support or reason. See examples of assertion used in a sentence. ASSERTION definition: 1. a statement that you strongly believe is true: 2. a statement that you strongly believe is.. Learn more. The meaning of ASSERTION is the act of asserting or something that is asserted. How to use assertion in a sentence.

The meaning of ASSERTION is the act of asserting or something that is asserted. How to use assertion in a sentence.

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