reagin

noun

re·​agin rē-ˈā-jən How to pronounce reagin (audio)
-gən
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
reaginic adjective

Word History

Etymology

International Scientific Vocabulary, from reagent

First Known Use

circa 1911, in the meaning defined at sense 1

Time Traveler
The first known use of reagin was circa 1911

Dictionary Entries Near reagin

Cite this Entry

“Reagin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reagin. Accessed 26 May. 2024.

Medical Definition

reagin

noun
re·​agin rē-ˈā-jən How to pronounce reagin (audio) -gən How to pronounce reagin (audio)
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
reaginic adjective

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