Meaning of ASSERTION in English
n. 1 a declaration; a forthright statement. 2 the act or an instance of asserting. 3 (also self-assertion) insistence on the recognition of one's rights or claims.
[ ME f. F assertion or L assertio (as ASSERT, -ION) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012