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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Some clinical trials indicate that BCAAs may help alleviate soreness during this process, which could be especially helpful for those who are new to exercise or regularly training at high intensity, Hernandez said. Allison Forsyth, Health, 20 Feb. 2026 Høeg pointed to the number of deaths of babies who received the RSV monoclonals in clinical trials, despite study investigators and the FDA determining the deaths appeared to be unrelated to the products. O. Rose Broderick, STAT, 20 Feb. 2026 The dispute centered over a 40,000-person clinical trial that concluded Moderna's new vaccine was more effective in adults aged 50 and older than one of the standard flu shots used today. Arkansas Online, 19 Feb. 2026 An upcoming once-daily pill form of tirzepatide, called orforglipron, has shown promising results during clinical trials and is awaiting FDA approval. Nicole Hernandez, USA Today, 19 Feb. 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 26 Feb. 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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