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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There are also muscle quality tests being developed in clinical trial settings, Navani says, to provide deeper insights into human muscle function. Alexa Mikhail, Flow Space, 13 Feb. 2026 Further testing in lab experiments and clinical trials will be needed to confirm the efficacy of such a drug. Khloe Quill, FOXNews.com, 12 Feb. 2026 The agency made this decision, which was disclosed in late January, after years of discussion about the definition of a clinical trial that was established in 2014. Ed Silverman, STAT, 12 Feb. 2026 The company is already in pre-clinical trials for cancer drugs, with hopes to move to clinical trials by the end of the year. Nick Lichtenberg, Fortune, 11 Feb. 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 19 Feb. 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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