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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The company has already achieved something no one had done before, using AI from end to end to design a drug candidate that reached phase 2 clinical trials. Bernard Marr, Forbes.com, 7 Aug. 2026 Even though mFlusiva outperformed the traditional flu shot in a late-stage clinical trial, its approval was not a sure thing. Berkeley Lovelace Jr, NBC news, 6 Aug. 2026 The approval covers two of the most vulnerable populations for flu—adults aged 50 to 65 and adults aged 65 and up—on the condition that Moderna will run a further clinical trial in the older group. Claire Cameron, Scientific American, 6 Aug. 2026 But every vial of insulin or GLP-1 medication on a pharmacist’s shelf is the product of decades of clinical trials and safety testing. Los Angeles Times, 6 Aug. 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 7 Aug. 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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