experimental

adjective

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ex·per·i·men·tal | \ ik-ˌsper-ə-ˈmen-tᵊl

also -ˌspir- \

Definition of experimental

1 : of, relating to, or based on experience or experiment

2a : serving the ends of or used as a means of experimentation an experimental school

b : relating to or having the characteristics of experiment : tentative still in the experimental stage

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Synonyms for experimental

Synonyms

Examples of experimental in a Sentence

The fuel is being used on an experimental basis. an experimental procedure for patients suffering from leukemia

Recent Examples on the Web But some critics warn the government might be moving too fast, pushing an experimental vaccine on a broad populace in an effort to quickly regain lost tourist dollars. — Washington Post, "Against the odds, Cuba could become a coronavirus vaccine powerhouse.," 29 Mar. 2021 The company was moving forward with an experimental COVID-19 vaccine. — Sue Halpern, The New Yorker, "Why COVID-19 Vaccines Aren’t Yet Available to Everyone," 13 Mar. 2021 Last month, the company agreed to work with CureVac NV to help boost production of the German company’s experimental vaccine and improve the shot to help protect against multiple variants. — Fortune, "Promising COVID-19 antibody therapy significantly reduces risk of hospitalization, death," 12 Mar. 2021 Their responses range from offshoring clinical trials to pursuing blood tests that could predict an experimental vaccine’s efficacy. — Jared Whitlock, Wired, "The US Has 3 Covid Vaccines—Testing New Ones Is Complicated," 11 Mar. 2021 Despite being an experimental vaccine, Lamberski decided that vaccinating the safari park and zoo's apes was worth the risk, reports National Geographic. — Elizabeth Gamillo, Smithsonian Magazine, "San Diego Zoo’s Great Apes Receive First Experimental Covid-19 Vaccine for Animals," 10 Mar. 2021 The Pfizer-BioNTech shot remains experimental because that final-stage study isn’t complete. — Dallas News, "US panel endorses widespread use of Pfizer COVID-19 vaccine," 10 Dec. 2020 But the vaccine remains experimental while final testing is done. — Lauran Neergaard And Danica Kirka, chicagotribune.com, "Pfizer’s coronavirus vaccine gets OK for emergency use in Britain," 2 Dec. 2020 But the vaccine remains experimental while final testing is done. — Arkansas Online, "U.K. authorizes Pfizer coronavirus vaccine for emergency use," 2 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'experimental.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.