ex·​per·​i·​men·​tal | \ ik-ˌsper-ə-ˈmen-tᵊl How to pronounce experimental (audio) 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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Other Words from experimental

experimentally \ ik-​ˌsper-​ə-​ˈmen-​tᵊl-​ē How to pronounce experimentally (audio) also  -​ˌspir-​ \ adverb

Synonyms for experimental


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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 France is participating in a multi-country study looking at the efficacy of four experimental treatments, including hydroxychloroquine. Bloomberg.com, "U.K. in Lockdown; Florida to Isolate N.Y. Arrivals: Virus Update," 13 May 2020 The Milken Institute, a health advocacy think tank, counted 133 experimental COVID-19 treatments in mid-April. Michael Waldholz, Scientific American, "Three Ways to Make Coronavirus Drugs in a Hurry," 12 May 2020 Shortly after Hinton approved the experimental treatment, Parkland staff called again. Dallas News, "How a 29-year-old black woman beat the odds to win her battle against the coronavirus," 9 May 2020 The nation's top infectious disease specialist says the experimental treatment can help some seriously ill COVID-19 patients recover more quickly. Aimee Picchi, CBS News, "Gilead's coronavirus drug remdesivir: What to know about the experimental treatment," 30 Apr. 2020 Remdesivir, the experimental coronavirus treatment from biotech giant Gilead, is steadily marching toward a Food and Drug Administration (FDA) approval. Sy Mukherjee, Fortune, "Gilead’s remdesivir won’t be a COVID-19 miracle cure, but it’s still an important first step," 30 Apr. 2020 Numerous therapies, including antimalarials and antibiotics, failed, and Goldsmith’s family and members of the medical community made a desperate plea for the experimental coronavirus treatment remdesivir. Fox News, "'Walking miracle' 34-year-old coronavirus patient at center of struggle for experimental drug returns home," 22 Apr. 2020 As his condition worsened, Padgett was taken to Swedish Medical Center and admitted on March 16 for experimental treatments. Evan Bush, Anchorage Daily News, "Seattle-area doctor opens up about his ‘brush with death’ and recovery from COVID-19," 14 Apr. 2020 One promising development is hatOhio hospitals could soon begin offering an experimental treatment using plasma from COVID-19 survivors to treat patients fighting the disease. Laura Johnston, cleveland, "Can I get unemployment if I quit my job over coronavirus: This Week in the CLE," 10 Apr. 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.

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First Known Use of experimental

15th century, in the meaning defined at sense 1

History and Etymology for experimental

Middle English, borrowed from Medieval Latin experīmentālis, from Latin experīmentum "testing, experience, proof" + -ālis -al entry 1 — more at experiment entry 1

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Time Traveler for experimental

Time Traveler

The first known use of experimental was in the 15th century

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Statistics for experimental

Last Updated

18 May 2020

Cite this Entry

“Experimental.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/experimental. Accessed 30 May. 2020.

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More Definitions for experimental


How to pronounce experimental (audio)

English Language Learners Definition of experimental

: relating to a scientific experiment or to scientific experiments in general
: made or done in order to see how well something works
: using a new way of doing or thinking about something


ex·​per·​i·​men·​tal | \ ik-ˌsper-ə-ˈmen-tᵊl How to pronounce experimental (audio) \

Kids Definition of experimental

: relating to, based on, or used for experiment He's trying an experimental treatment for the disease.


ex·​per·​i·​men·​tal | \ ik-ˌsper-ə-ˈment-ᵊl also -ˌspir- How to pronounce experimental (audio) \

Medical Definition of experimental

1 : of, relating to, or based on experience or experiment
2 : founded on or derived from experiment the heart of the experimental method is the direct control of the thing studied— B. F. Skinner
3 of a disease : intentionally produced especially in laboratory animals for the purpose of study experimental diabetes

Other Words from experimental

experimentally \ -​ᵊl-​ē How to pronounce experimentally (audio) \ adverb

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