Definition of "experiment"
A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried.
Quotations
From her childhood she had been accustomed to watch, and often to aid, in her uncle's chemical experiments; she was, therefore, not at a loss, as a complete novice in the science would have been.
1837, L[etitia] E[lizabeth] L[andon], “The Laboratory”, in Ethel Churchill: Or, The Two Brides. […], volume II, London: Henry Colburn, […], page 327
verb
third-person singular simple present experiments, present participle experimenting, simple past and past participle experimented