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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In a large clinical trial published in the New England Journal of Medicine, the Shield test made by Guardant Health detected 83 percent case of colon cancer, but only 13 percent of advanced precancerous lesions. The Washington Post, San Diego Union-Tribune, 2 June 2026 Why Ozempic Causes Constipation Constipation showed up regularly in clinical trials of the drug. Samantha Agate, Miami Herald, 2 June 2026 Longevity startup NewLimit plans to launch its first clinical trial of a liver medicine after raising a staggering $435 million in new funding. Allison Deangelis, STAT, 2 June 2026 An experimental drug for metastatic pancreatic cancer nearly doubled overall survival in a Phase 3 clinical trial, offering new hope for patients with one of the deadliest forms of cancer. ABC News, 1 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 4 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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