clinical trial

noun

: a scientifically controlled study of the safety and effectiveness of a therapeutic agent (such as a drug or vaccine) using consenting human subjects

Examples of clinical trial in a Sentence

Recent Examples on the Web
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In clinical trials, roughly 78% of patients reached remission and more than 80% were still in remission a full year later. Angelica Stabile, FOXNews.com, 2 July 2026 Emerging African manufacturers, meanwhile, still need earlier support for research and development, clinical trials, and regulatory dossiers. Paul Adepoju, semafor.com, 2 July 2026 The first in-human clinical trial will assess the drug's safety profile, hopefully providing a green light for further efficacy studies. New Atlas, 2 July 2026 To date, there have not been any clinical trials testing the safety or efficacy of this trend. Theara Coleman, TheWeek, 1 July 2026 See All Example Sentences for clinical trial

Word History

First Known Use

1946, in the meaning defined above

Time Traveler
The first known use of clinical trial was in 1946

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Cite this Entry

“Clinical trial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/clinical%20trial. Accessed 3 Jul. 2026.

Medical Definition

clinical trial

noun
: a scientifically controlled study of the safety and effectiveness of a therapeutic agent (as a drug or vaccine) using consenting human subjects

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