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 researchers plan to scale up production and refine the technology for clinical trials. Aamir Khollam, Interesting Engineering, 5 Sep. 2025 This reduces uncertainty and may increase the likelihood of successful outcomes in clinical trials, especially for cancer and chronic conditions. Sixteen Ramos, USA Today, 4 Sep. 2025 Researchers at Saarland University in Germany headed a clinical trial that found a nasal spray could reduce the risk of coronavirus infection by two-thirds. Angelica Stabile, FOXNews.com, 4 Sep. 2025 With continued use, clinical trials demonstrated improvements in hydration, elasticity and the appearance of fine lines and wrinkles. Celia Shatzman, Forbes.com, 3 Sep. 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 10 Sep. 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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