IgG

noun
\ ˌī-(ˌ)jē-ˈjē How to pronounce IgG (audio) \

Definition of IgG

1 : a class of immunoglobulins including the most common antibodies circulating in the blood that facilitate the phagocytic destruction of microorganisms foreign to the body, that bind to and activate complement, and that are the only immunoglobulins to cross over the placenta from mother to fetus
2 : an antibody of the class IgG

First Known Use of IgG

1965, in the meaning defined at sense 1

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Cite this Entry

“IgG.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/IgG. Accessed 29 January 2020.

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More Definitions for IgG

IgG

noun
\ ˌī-ˌjē-ˈjē How to pronounce IgG (audio) \

Medical Definition of IgG

1 : a class of immunoglobulins that include the most common antibodies circulating in the blood, that facilitate the phagocytic destruction of microorganisms foreign to the body, that bind to and activate complement, and that are the only immunoglobulins to cross over the placenta from mother to fetus
2 : an immunoglobulin of the class IgG

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to assert without proof or before proving

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