Assertion: Definition

ASSERTION definition: 1. a statement that you strongly believe is true: 2. a statement that you strongly believe is…. Learn more. Learn the meaning of ' assertion ' as a noun in British and American English, with synonyms, examples, and word origin. Find out how to use ' assertion ' in a sentence and how it differs from related terms. An assertion is a declaration that's made emphatically , especially as part of an argument or as if it's to be understood as a statement of fact. Learn the meaning of assertion as a statement of something strongly believed or claimed, without proof. Find out the synonyms, usage notes and example sentences of assertion in the Oxford Advanced Learner's Dictionary.