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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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Earlier this year, Texas lawmakers approved $50 million to conduct clinical trials on ibogaine. Center Square, The Washington Examiner, 5 Dec. 2025 Ben was enrolled in MED-EL’s clinical trial to be fitted with a cochlear implant device, enabling him to hear sound for the first time. Jacqueline Howard, CNN Money, 5 Dec. 2025 The new chair is Kirk Milhoan, a pediatric cardiologist who is a member of the Independent Medical Alliance, a group that has promoted the use of ivermectin to treat COVID-19 despite clinical trials showing that the drug isn’t effective against the virus. Tom Bartlett, The Atlantic, 5 Dec. 2025 The team believes this system may reach human clinical trials within three to five years. Kurt Knutsson, FOXNews.com, 4 Dec. 2025 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 7 Dec. 2025.

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

More from Merriam-Webster on clinical trial

Last Updated: - Updated example sentences
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