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clinical trial

American

the scientific investigation of a new treatment that has shown some benefit in animal or laboratory studies, but that has not yet been proven effective in humans.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Results from a successful phase 1 human clinical trial of that earlier hydrogel approach were reported in fall 2019.

From Science Daily • May 5, 2026

“Our confidence in the safety and efficacy of Foundayo is based on our robust clinical trial program, which followed over 11,000 participants for up to two years,” the Lilly spokesperson told Barron’s.

From Barron's • May 4, 2026

A safer and more effective formulation of the most popular hair-loss treatment led to robust hair growth in a clinical trial.

From MarketWatch • Apr. 27, 2026

Dr. Sullivan will present the findings from the study, "Duodenal mucosal resurfacing prevents weight regain after tirzepatide withdrawal: REMAIN-1 multicenter, randomized, double-blind, sham-controlled clinical trial -- midpoint cohort results," abstract 642, at 8:30 a.m.

From Science Daily • Apr. 23, 2026

Their fifty-three patients were, in effect, a clinical trial, and an astonishingly successful one.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023