IgA

noun
\ ˌī-(ˌ)jē-ˈā How to pronounce IgA (audio) \

Definition of IgA

1 : a class of immunoglobulins including antibodies found in external bodily secretions (such as saliva, tears, and sweat)
2 : an antibody of the class IgA

First Known Use of IgA

1969, in the meaning defined at sense 1

History and Etymology for IgA

immunoglobulin

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Cite this Entry

“IgA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/IgA. Accessed 17 Apr. 2021.

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More Definitions for IgA

IgA

noun
\ ˌī-ˌjē-ˈā How to pronounce IgA (audio) \

Medical Definition of IgA

1 : a class of immunoglobulins that include antibodies found in external bodily secretions (as saliva, tears, and sweat)
2 : an immunoglobulin of the class IgA

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