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
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As more minerals get refined closer to home, their reagents will become indispensable.
—
Olumuyiwa Olowogboyega, semafor.com, 14 July 2025
Three of the photos did show chemical luminescence, which indicates blood is present due to the reaction with the reagent, the probable cause said.
—Kate Linderman, Kansas City Star, 4 June 2025
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
See All Example Sentences for reagent
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Olumuyiwa Olowogboyega, semafor.com, 14 July 2025
Three of the photos did show chemical luminescence, which indicates blood is present due to the reaction with the reagent, the probable cause said.
—Kate Linderman, Kansas City Star, 4 June 2025
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
See All Example Sentences for reagent
Cite this Entry
“Reagent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reagent. Accessed 19 Aug. 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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