reagent

noun
re·​agent | \ rē-ˈā-jənt How to pronounce reagent (audio) \

Definition of reagent

: a substance used (as in detecting or measuring a component, in preparing a product, or in developing photographs) because of its chemical or biological activity

Examples of reagent in a Sentence

Recent Examples on the Web The tests that LabGenomics shipped employed a different reagent than a version ultimately approved by the federal government, the audit reported. Pamela Wood, baltimoresun.com, 14 May 2021 The reagent caused the sample to change color according to the amount of sugar present in the urine. Emily Langer, Washington Post, 5 May 2021 Coles, founder and CEO of the Churches Outreach Network in Greenville, North Carolina, swabs his nose, then stirs the sample into a little tube filled with a reagent. Lauren Dunn, NBC News, 26 Apr. 2021 These tests are often performed with a nose swab, which is then placed directly into an extraction buffer or reagent. Alison Fox, Travel + Leisure, 12 Apr. 2021 The replacement was necessary because the original tests used a reagent that was different from what ultimately was given emergency approval by the federal government. Pamela Wood, baltimoresun.com, 8 Apr. 2021 The Abbott kit comes with a nasal swab, reagent solution and a test card. Ken Alltucker, USA TODAY, 1 Apr. 2021 To administer the test, a healthcare worker opens a card—which is about the size of a driver’s license—and adds a few drops of a liquid called a reagent. Claire Maldarelli, Popular Science, 2 Dec. 2020 To administer the test, a healthcare worker opens a card—which is about the size of a driver’s license—and adds a few drops of a liquid called a reagent. Claire Maldarelli, Popular Science, 2 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reagent.' 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 reagent

1797, in the meaning defined above

History and Etymology for reagent

New Latin reagent-, reagens, present participle of reagere to react — more at react

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Time Traveler for reagent

Time Traveler

The first known use of reagent was in 1797

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Dictionary Entries Near reagent

reagency

reagent

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Cite this Entry

“Reagent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reagent. Accessed 29 Jul. 2021.

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More Definitions for reagent

reagent

noun

English Language Learners Definition of reagent

chemistry : a substance that is used to test for the presence of another substance by causing a chemical reaction with it

reagent

noun
re·​agent | \ rē-ˈā-jənt How to pronounce reagent (audio) \

Medical Definition of reagent

1 : a substance used (as in detecting or measuring a component, in preparing a product, or in developing photographs) because of its chemical or biological activity

More from Merriam-Webster on reagent

Britannica.com: Encyclopedia article about reagent

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