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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Shares of Viking Therapeutics plummeted 42% on Tuesday after the company revealed worse-than-expected clinical trial data for its weight-loss pill. Amy Feldman, Forbes.com, 20 Aug. 2025 There aren’t enough patients to do robust, randomized clinical trials, McCurdy said. Erika Edwards, NBC news, 18 Aug. 2025 Disappointing clinical trial results , leadership changes and profit guidance cuts also weighed on Novo’s share price. Chloe Taylor, CNBC, 18 Aug. 2025 In clinical trials, this quick delivery helped improve sleep quality and reduce next-day fibromyalgia pain – offering immediate relief as well as potentially longer-term symptom improvement. New Atlas, 17 Aug. 2025 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 31 Aug. 2025.

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

More from Merriam-Webster on clinical trial

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