reagent
noun
re·agent
rē-ˈā-jənt 
: 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
Photos were taken when the reagent was used, according to the probable cause statement.
—
Kate Linderman, Kansas City Star, 4 June 2025
Quest Diagnostics, the company that provided the faulty tests, said the false results came after the company temporarily changed the reagent, or chemical, that was usually used in the tests.
—Salvador Hernandez, Los Angeles Times, 31 May 2025
In a statement, a spokesperson for the company said the replacement reagent had been approved by the U.S. Food and Drug Administration.
—Salvador Hernandez, Los Angeles Times, 29 Apr. 2025
Expanding the bat toolbox: Carollia perspicillata bat cell lines and reagents enable the characterization of viral susceptibility and innate immune responses
Avery Hurt is a freelance science journalist.
—Avery Hurt, Discover Magazine, 17 May 2025
See All Example Sentences for reagent
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Kate Linderman, Kansas City Star, 4 June 2025
Quest Diagnostics, the company that provided the faulty tests, said the false results came after the company temporarily changed the reagent, or chemical, that was usually used in the tests.
—Salvador Hernandez, Los Angeles Times, 31 May 2025
In a statement, a spokesperson for the company said the replacement reagent had been approved by the U.S. Food and Drug Administration.
—Salvador Hernandez, Los Angeles Times, 29 Apr. 2025
Expanding the bat toolbox: Carollia perspicillata bat cell lines and reagents enable the characterization of viral susceptibility and innate immune responses
Avery Hurt is a freelance science journalist.
—Avery Hurt, Discover Magazine, 17 May 2025
See All Example Sentences for reagent
Cite this Entry
“Reagent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reagent. Accessed 18 Jun. 2025.
Copy CitationMedical Definition
reagent
noun
re·agent
rē-ˈā-jənt
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
2
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