reagin

noun
re·​agin | \ rē-ˈā-jən How to pronounce reagin (audio) , -gən \

Definition of reagin

1 : a substance in the blood of persons with syphilis responsible for positive serological reactions for syphilis
2 : an antibody (such as IgE in humans) that mediates hypersensitive allergic reactions of rapid onset

Other Words from reagin

reaginic \ ˌrē-​ə-​ˈji-​nik How to pronounce reagin (audio) , -​ˈgi-​ \ adjective

First Known Use of reagin

circa 1911, in the meaning defined at sense 1

History and Etymology for reagin

International Scientific Vocabulary, from reagent

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Time Traveler for reagin

Time Traveler

The first known use of reagin was circa 1911

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Cite this Entry

“Reagin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reagin. Accessed 28 Feb. 2021.

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More Definitions for reagin

reagin

noun
re·​agin | \ rē-ˈā-jən How to pronounce reagin (audio) , -gən How to pronounce reagin (audio) \

Medical Definition of reagin

1 : a substance that is in the blood of individuals with syphilis and is responsible for positive serological reactions for syphilis
2 : an antibody (as IgE in humans) that mediates hypersensitive allergic reactions of rapid onset

Other Words from reagin

reaginic \ ˌrē-​ə-​ˈjin-​ik How to pronounce reagin (audio) , -​ˈgin-​ How to pronounce reagin (audio) \ adjective

More from Merriam-Webster on reagin

Britannica.com: Encyclopedia article about reagin

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