Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun reagin

1 sense of reagin

Sense 1
reagin -- (an immunoglobulin E that is formed as an antibody against allergens (such as pollen); attaches to cell membranes causing the release of histamine and other substances responsible for the local inflammation characteristic of an allergy)
       => immunoglobulin E, IgE -- (one of the five major classes of immunoglobulins; present primarily in the skin and mucous membranes)