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

Other Words from experimental

experimentally \ ik-​ˌsper-​ə-​ˈmen-​tᵊl-​ē How to pronounce experimental (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 Reversible forms of male birth control are still experimental, but are getting closer to reality. Wired, 24 July 2022 Yes, because there are definitely songs that were more experimental that were still finding themselves and there were songs that were maybe a bit more uptempo, and there’s some piano ballads that were more love songs. Niko Stratis, SPIN, 19 July 2022 While his experience has been entirely experimental and his results anecdotal, Bell encourages those who also struggle with sleep to work at revamping their habits. Katie Dupere, Men's Health, 11 July 2022 All of these therapies are still experimental, but Seres is closest to the finish line with its pill of bacterial spores purified from stool. Ryan Cross, BostonGlobe.com, 6 July 2022 As for her beauty routine, Tisdale is much less experimental. Ariana Yaptangco, Glamour, 5 July 2022 De Armas explained to Queue that the film will be more experimental than what most people will probably expect. Bianca Betancourt, Harper's BAZAAR, 16 June 2022 This kind of seasonal forecasting is experimental, and errors are possible. Jason Samenow, Washington Post, 3 June 2022 Research is experimental now, but the tiny crab robots – they can be made to crawl, twist, bend, turn and jump – could eventually lead to even smaller robots capable of repairs and other work. Mike Snider, USA TODAY, 27 May 2022 See More

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.

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

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

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Dictionary Entries Near experimental



experimental design

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Last Updated

1 Aug 2022

Cite this Entry

“Experimental.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/experimental. Accessed 7 Aug. 2022.

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More Definitions for experimental


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 experimental (audio) \ adverb

More from Merriam-Webster on experimental

Nglish: Translation of experimental for Spanish Speakers

Britannica English: Translation of experimental for Arabic Speakers


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