con·​fir·​ma·​to·​ry | \ kən-ˈfər-mə-ˌtȯr-ē How to pronounce confirmatory (audio) \

Definition of confirmatory

: serving to confirm : corroborative a confirmatory test

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Examples of confirmatory in a Sentence

a confirmatory test for pregnancy

Recent Examples on the Web

The continued approval of the drug is contingent upon a confirmatory trial of the drug combinations’ benefits. Kimberly Chin, WSJ, "Eli Lilly’s Sarcoma Drug Combo Proves Ineffective in Trials," 18 Jan. 2019 That’s because the government has been reporting suspect cases without waiting for confirmatory tests. Helen Branswell, STAT, "China may compete with the West for limited opportunities to test Ebola vaccine," 8 June 2018 An abnormal test result triggers a confirmatory test, such as gene sequencing, and potentially leads to a full diagnosis within two weeks. Robert Moy, STAT, "Delays in adding new newborn screening tests harm babies, families," 30 Apr. 2018 Lunak said new subscribers receive a confirmatory e-mail. Sean P. Murphy,, "This Amazon one-click can easily leave you on the hook for $8.99 each month," 26 Mar. 2018 Because Krabbe newborn screening has a high rate of false positives, samples with abnormal results will be sent to the Mayo Clinic in Minnesota for confirmatory tests. Patricia Callahan,, "Illinois babies finally screened for deadly Krabbe disease," 12 Dec. 2017 Wagenmakers, a research methodologist from the University of Amsterdam, believed the paper had at least one glaring problem: There was no clear dividing line between the exploratory and confirmatory phases of Bem’s research. Daniel Engber, Slate Magazine, "Daryl Bem Proved ESP Is Real," 17 May 2017 In parallel, local health authorities were notified and appropriate microbiology confirmatory samples taken. Maryn Mckenna, WIRED, "Spreading cholera, maybe polio: Now will we care about Haiti?," 27 Jan. 2011 What’s more, the only two surveys conducted after Jan. 29 provided a certain amount of confirmatory evidence. Nate Cohn, New York Times, "Polls Were Way Off on Donald Trump. Here’s What It Means.," 2 Feb. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'confirmatory.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of confirmatory

1636, in the meaning defined above

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Time Traveler for confirmatory

The first known use of confirmatory was in 1636

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More from Merriam-Webster on confirmatory

Rhyming Dictionary: Words that rhyme with confirmatory

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Britannica English: Translation of confirmatory for Arabic Speakers

Comments on confirmatory

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recurring in steady succession

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