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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But an Epstein-Barr vaccine — several of which are in clinical trials — could someday stop infections in the first place. Aria Bendix, NBC news, 13 Nov. 2025 The research team’s constant focus has been on making these medical robots ready for use in operating theatres as soon as possible, with their next immediate goal being the rapid initiation of human clinical trials. Mrigakshi Dixit, Interesting Engineering, 13 Nov. 2025 The result is that real patients experience complications in real-time, without knowing risks that may have been uncovered in a clinical trial. Elizabeth B. Kim, Cincinnati Enquirer, 12 Nov. 2025 The clinical trial results were published earlier this year in the Journal of Clinical Oncology. Khloe Quill, FOXNews.com, 12 Nov. 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

Browse Nearby Words

Cite this Entry

“Clinical trial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/clinical%20trial. Accessed 16 Nov. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!