The noun criterion means a requirement by which you evaluate, decide about, or handle something.
Synonyms are benchmark, norm, precedent or principle.
The word origins in 1660s. It comes from Latinized form of Greek (16th century) kriterion meaning “means for judging, standard”, from krites meaning “judge” and from krei- meaning “to sieve,” thus “discriminate, distinguish”. Used in English as a Greek word from the 1610s.
Attitude is the only potential criterion identical to knowledge and conduct.
Mastery is not the sole criterion for admission to the university.
Salary is a necessary criterion for job satisfaction.