(n)trial, trial run, test, tryouttrying something to find out about it“a sample for ten days free trial”, “a trial of progesterone failed to relieve the pain”
(n)test, mental test, mental testing, psychometric testany standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc“the test was standardized on a large sample of students”
(n)examination, exam, testa set of questions or exercises evaluating skill or knowledge“when the test was stolen the professor had to make a new set of questions”
(n)test, trial, runthe act of testing something“in the experimental trials the amount of carbon was measured separately”, “he called each flip of the coin a new trial”
(v)test, prove, try, try out, examine, essayput to the test, as for its quality, or give experimental use to“This approach has been tried with good results”, “Test this recipe”