double-blind
adjective
dou·ble-blind
ˌdə-bəl-ˈblīnd 
sometimes offensive
: of, relating to, or being an experimental procedure in which neither the subjects nor the experimenters know which subjects are in the test and control groups during the actual course of the experiments see usage paragraph at blind entry 1 compare open-label, single-blind
Examples of double-blind in a Sentence
Recent Examples on the Web
Around 10% of adults worldwide self-report sensitivity to gluten or wheat, but when tested under double-blind trial conditions, only 16-30% react specifically to gluten.
—
New Atlas, 24 Oct. 2025
In the double-blind trial, a total of 3,127 patients with obesity but not diabetes in the USA, China, Brazil, India, Japan, South Korea, Spain, Slovakia and Taiwan underwent randomization.
—Hannah Millington, MSNBC Newsweek, 17 Sep. 2025
The sort who demands evidence, data, double-blind studies.
—Samantha Browning Shea
september 10, Literary Hub, 10 Sep. 2025
In medicine, physicians require double-blind studies and statistical proof before acting.
—Robert Pearl, Forbes.com, 21 July 2025
Next, the team is planning a randomized, double-blind trial that will also measure pressure inside the skull.
—Khloe Quill, FOXNews.com, 2 July 2025
In a 2019 randomized, double-blind study involving adults with chronic stress, those who took ashwagandha extract for 60 days had significantly lower cortisol levels compared to the placebo group (participants taking a substance of no therapeutic value).
—Sarah Jividen, Verywell Health, 26 June 2025
Any effort to replace true experts who rely on randomized double-blind clinical trials with other members who may have political or conspiracy bias is a disaster waiting to happen.
—Dp Opinion, Denver Post, 23 June 2025
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New Atlas, 24 Oct. 2025
In the double-blind trial, a total of 3,127 patients with obesity but not diabetes in the USA, China, Brazil, India, Japan, South Korea, Spain, Slovakia and Taiwan underwent randomization.
—Hannah Millington, MSNBC Newsweek, 17 Sep. 2025
The sort who demands evidence, data, double-blind studies.
—Samantha Browning Shea
september 10, Literary Hub, 10 Sep. 2025
In medicine, physicians require double-blind studies and statistical proof before acting.
—Robert Pearl, Forbes.com, 21 July 2025
Next, the team is planning a randomized, double-blind trial that will also measure pressure inside the skull.
—Khloe Quill, FOXNews.com, 2 July 2025
In a 2019 randomized, double-blind study involving adults with chronic stress, those who took ashwagandha extract for 60 days had significantly lower cortisol levels compared to the placebo group (participants taking a substance of no therapeutic value).
—Sarah Jividen, Verywell Health, 26 June 2025
Any effort to replace true experts who rely on randomized double-blind clinical trials with other members who may have political or conspiracy bias is a disaster waiting to happen.
—Dp Opinion, Denver Post, 23 June 2025
Cite this Entry
“Double-blind.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/double-blind. Accessed 6 Nov. 2025.
Copy CitationMedical Definition
double-blind
adjective
dou·ble-blind
ˌdəb-əl-ˈblīnd
: of, relating to, or being an experimental procedure in which neither the subjects nor the experimenters know which subjects are in the test and control groups during the actual course of the experiments
Note: Figurative uses of blind, whether alone or as part of a longer word, compound, or idiom, are sometimes considered offensive when they associate negative characteristics (such as lack of knowledge or understanding) with blindness. Generally speaking, the more negative such a use is, the more likely it is to offend.
compare open-label, single-blindLove words? Need even more definitions?
Merriam-Webster unabridged
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