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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Cevaal cautioned that many breakthroughs do not reach the clinical trial stage. Solcyré Burga, Time, 26 Dec. 2025 There have been several clinical trials to measure weight loss with the injectable form of Wegovy, but people typically lose about 15% of their body weight on this medication. Korin Miller, SELF, 23 Dec. 2025 Importantly, Novo Nordisk’s latest clinical trial success was based on the maximum daily dose of 25 mg, McCoy says. Lauren J. Young, Scientific American, 23 Dec. 2025 This allows seriously ill patients to receive investigational drugs outside clinical trials if there are no other available options. Mary Kekatos, ABC News, 22 Dec. 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 30 Dec. 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

Last Updated: - Updated example sentences
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