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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As a teaching and research institution, Dean McGee Eye Institute stays at the forefront of advances in ophthalmology, conducting clinical trials and developing new treatments. Community's Choice Awards, Oklahoman, 7 Mar. 2026 The organization lists 17 areas of inquiry and 200 active clinical trials on its website, ranging from allergy to urology. Paul Sisson, San Diego Union-Tribune, 6 Mar. 2026 According to Anne Peters, MD, an endocrinologist at Keck Medicine of USC, clinical trials have shown that about 3% to 8% of people get a skin reaction when taking the drug. Audrey Noble, Vogue, 6 Mar. 2026 Novo Nordisk’s Wegovy medication guides, for example, note that a small number of participants experienced hair loss during clinical trials. Julia Sullivan, Allure, 6 Mar. 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 11 Mar. 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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