Experimental

a.	1.	Pertaining to experiment; founded on, or derived from, experiment or trial; as, experimental science; given to, or skilled in, experiment; as, an experimental philosopher.
	2.	Known by, or derived from, experience; as, experimental religion.

Adj.	1.	experimental - relating to or based on experiment; "experimental physics"
	2.	experimental - relying on observation or experiment; "experimental results that supported the hypothesis" Synonyms: data-based, observational
	3.	experimental - of the nature of or undergoing an experiment; "an experimental drug"; "a pilot project"; "a test run"; "a trial separation"

conjectural, cut-and-try, determined, developmental, empirical, experiential, exploratory, heuristic, hit-or-miss, hypothetical, pilot, preliminary, preparatory, probationary, probative, probatory, proving, provisional, resolute, speculative, temporary, tentative, test, testing, theoretical, trial, trial-and-error, trying, venturesome, verificatory, willing