]assertion definition
assertion definition: The definition of an assertion is an allegation or proclamation of something, often as the result of opinion as opposed to fact. (noun) An example of someone making an assertion is a person who stands up boldly in a meeting with a...
An assertion is a speech act in which something is claimed to hold, for instance that there are infinitely many prime numbers, or, with respect to some time t, that there is a traffic congestion on Brooklyn Bridge at t, or, of some person x with respect to some time t, that x has a tooth ache at t.