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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But there is no clinical trial evidence to suggest that either drug can treat cancer in humans, and fenbendazole isn’t approved for human use. Claire Cameron, Scientific American, 12 May 2026 Mann started taking it in August 1998, as part of a clinical trial. Sydney Lupkin, NPR, 10 May 2026 In March, biotech company uniQure said the agency asked for an additional clinical trial of an experimental gene therapy for the fatal neurodegenerative disorder Huntington’s disease, dashing hopes of patients and advocates who’d hoped for a faster path to approval. Sarah Owermohle, CNN Money, 8 May 2026 Hollern said there still is much to do before any therapies can be developed, including more studies, a clinical trial and more. Ashley MacKin Solomon, San Diego Union-Tribune, 8 May 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 14 May. 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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