IgM

noun
\ ˌī-(ˌ)jē-ˈem How to pronounce IgM (audio) \

Definition of IgM

1 : a class of immunoglobulins of high molecular weight including the primary antibodies that are released into the blood early in the immune response to be replaced later by IgG and that are highly efficient in binding complement
2 : an antibody of the class IgM

First Known Use of IgM

1969, in the meaning defined at sense 1

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Cite this Entry

“IgM.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/IgM. Accessed 25 Nov. 2020.

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More Definitions for IgM

IgM

noun
\ ˌī-ˌjē-ˈem How to pronounce IgM (audio) \

Medical Definition of IgM

1 : a class of immunoglobulins of high molecular weight that include the primary antibodies released into the blood early in the immune response to be replaced later by IgGs of lower molecular weight and that are highly efficient in binding complement
2 : an immunoglobulin of the class IgM

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