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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Revolution Medicines, a clinical oncology company, released a press release detailing the results of a clinical trial for a new medication on Monday, April 13. Eva Flowe april 21, Charlotte Observer, 21 Apr. 2026 And in some clinical trials, psilocybin, MDMA and LSD have been found to have promising results in treating mental health conditions. Jackie Flynn Mogensen, Scientific American, 20 Apr. 2026 This was the drug that Stokes got on her clinical trial. Angus Chen, STAT, 19 Apr. 2026 Researchers say ibogaine could eventually fill a gap in addiction treatment, particularly for opioid dependence, but more large-scale clinical trials are needed before it can be considered safe or effective for any condition. Kerry Breen, CBS News, 18 Apr. 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 23 Apr. 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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