IgG

noun

\ ˌī-(ˌ)jē-ˈjē

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

Learn More About IgG

Dictionary Entries Near IgG

IGF

IgG

igigi

Statistics for IgG

Cite this Entry

“IgG.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/IgG. Accessed 17 Aug. 2022.

Style: MLA

MLA

Chicago

APA

Merriam-Webster Check Mark Icon

More Definitions for IgG

IgG

noun

\ ˌī-ˌjē-ˈjē

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