immunoglobulin

American  

[im-yuh-noh-glob-yuh-lin, ih-myoo-] / ˌɪm jə noʊˈglɒb jə lɪn, ɪˌmju- /

noun

1. any of several classes of structurally related proteins that function as antibodies or receptors and are found in plasma and other body fluids and in the membrane of certain cells.

2. the fraction of the blood serum containing antibodies.

3. an antibody. Ig

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immunoglobulin British  

/ ˌɪmjʊnəʊˈɡlɒbjʊlɪn /

noun

1. any of five classes of proteins, all of which show antibody activity. The most abundant ones are immunoglobulin G ( IgG ) and immunoglobulin A ( IgA )

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immunoglobulin Scientific  

/ ĭm′yə-nō-glŏb′yə-lĭn,ĭ-myo̅o̅′- /

1. See antibody

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Etymology

Origin of immunoglobulin

First recorded in 1955–60; immuno- + globulin

Example Sentences

See Examples For:

immunoglobulin

CSL said “a normalization of channel inventory” for immunoglobulin in the U.S. would hit revenue by around US$300 million.

From The Wall Street Journal ● May 11, 2026

Famotidine, intravenous immunoglobulin, SGLT-2 inhibitors, and GLP-1 agonists are under investigation for neurological, immune-related, heart, and kidney symptoms.

From Science Daily ● Jan. 8, 2026

She was admitted to the city's John Radcliffe Hospital and was given immunoglobulin.

From BBC ● Apr. 24, 2024

He was arrested on Friday for alleged involvement in the procurement of counterfeit intravenous human immunoglobulin, which is used to help fight infections and cancer, and was ordered held for investigation until Feb. 15.

From Seattle Times ● Feb. 6, 2024

They could get treatments, like measles immunoglobulin, which could help them actually recover and be spared of any serious effects.”

From Salon ● Jan. 25, 2024