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Learn to pronounce ex·per·i·men·tal

/ikˌsperəˈmen(t)l,ekˌsperəˈmen(t)l/
adjective
(of a new invention or product) based on untested ideas or techniques and not yet established or finalized.
"an experimental drug"
synonyms: exploratory, investigational, probing, fact-finding, trial and error, trial, test, pilot, speculative, conjectural, hypothetical, tentative, preliminary, probationary, prototype, under review, under the microscope, on the drawing board, empirical, observational, untested, untried

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The meaning of EXPERIMENTAL is of, relating to, or based on experience or experiment. How to use experimental in a sentence.

Experiment

An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a... Wikipedia
adjective · relating to, based on, or having the nature of experiment. an experimental study · based on or derived from experience; empirical. experimental ...
using new methods, ideas, substances, etc. that have not been tried before, usually in order to find out what effect they have:.
adjective · theoretical · theoretic · speculative · hypothetical · conjectural · nonempirical · unproven · unempirical · unsubstantiated · metaphysical.
Unlike a descriptive study, an experiment is a study in which a treatment, procedure, or program is intentionally introduced and a result or outcome is observed ...
In clinical trials, refers to a drug (including a new drug, dose, combination, or route of administration) or procedure that has undergone basic laboratory ...
An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried.