assertion

noun

1. (countable, uncountable)The act of asserting; positive declaration or averment.
2. (countable, uncountable)Something which is asserted; a declaration; a statement asserted.

   “You're a man of strong assertions!”

   “Suppose you are given the semifactual assertion, "even if Nora had liked mathematics then she would have became^([sic]) a scientist" and then you find out that Nora did in fact become a scientist.”

3. (countable, uncountable)A statement or declaration which lacks support or evidence.

   “That's just a bare assertion.”

   “Drivers' union ASLEF bluntly rebuffed the claim of unofficial action, calling it a lie. And Avanti West Coast was unable to provide any proof for its assertion, when questioned by RAIL.”

   “However, that assertion is not backed up by US intelligence, sources told CNN. […] That claim came despite the Trump administration’s repeated assertions that the US had “obliterated” Iran’s nuclear program in military strikes last year.”

4. (countable, uncountable)Maintenance; vindication.

   “the assertion of one's rights or prerogatives”

5. (countable, uncountable)A statement in a program asserting a condition expected to be true at a particular point, used in debugging.

   “The user should be absolutely confident that the error issued is a real design error. In other words, a user should be confident that his assertion code is correct and that the assertion failure is not a false condition.”

6. (countable, uncountable)The set of information that the statement preparer is providing in a financial statement audit.