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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Cancer care is defined by a sequence of high‑stakes choices, therapy selection, sequencing, clinical trial consideration and ongoing adjustments, each one shaping what's next. Abhishek Kumar, Forbes.com, 23 June 2026 Millions of Americans with obesity are eager to get the drug, with options being limited so far to enrolling in a clinical trial or trying to obtain it by dodgy methods. Beth Mole, ArsTechnica, 23 June 2026 None of these are available outside of clinical trials now, and timelines shift based on trial outcomes and regulatory review. Allison Palmer, Miami Herald, 22 June 2026 Additional surgeries and clinical trials followed, according to previous interviews. Melissa Rudy, FOXNews.com, 22 June 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 24 Jun. 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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