immunoglobulin
noun
im·mu·no·glob·u·lin
ˌi-myə-nō-ˈglä-byə-lən 
i-ˌmyü-nō-
: antibody
The glycoproteins produced by B-cells, called antibodies or immunoglobulins, recognize and bind free antigens and are responsible for humoral immunity …—
Haruo Saito et al.
—abbreviation Ig
Haruo Saito et al.Examples of immunoglobulin in a Sentence
Recent Examples on the Web
In the absence of active lesions to swab for HSV itself, tests must evaluate the immune response to the virus in a patient’s blood, typically by screening for the immunoglobulin G (IgG) antibody.
—Lauren Schneider, Scientific American, 9 June 2026
The first involves immunoglobulin antibodies (IgE) that trigger immediate symptoms like wheezing, trouble breathing, swelling, abdominal pain, and diarrhea.
—Allison Forsyth, Health, 15 Apr. 2026
In some cases, immunoglobulin given within six days may also help prevent or lessen illness.
—Jennifer McRae, CBS News, 12 Mar. 2026
Several pregnant women also required immunoglobulin treatment after exposure to help protect against the high risk of complications, the state health department said.
—Deidre McPhillips, CNN Money, 27 Feb. 2026
See All Example Sentences for immunoglobulin
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Lauren Schneider, Scientific American, 9 June 2026
The first involves immunoglobulin antibodies (IgE) that trigger immediate symptoms like wheezing, trouble breathing, swelling, abdominal pain, and diarrhea.
—Allison Forsyth, Health, 15 Apr. 2026
In some cases, immunoglobulin given within six days may also help prevent or lessen illness.
—Jennifer McRae, CBS News, 12 Mar. 2026
Several pregnant women also required immunoglobulin treatment after exposure to help protect against the high risk of complications, the state health department said.
—Deidre McPhillips, CNN Money, 27 Feb. 2026
See All Example Sentences for immunoglobulin
Cite this Entry
“Immunoglobulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immunoglobulin. Accessed 15 Jun. 2026.
Copy CitationMedical Definition
immunoglobulin
noun
im·mu·no·glob·u·lin
-ˈgläb-yə-lən
: antibody
—abbreviation Ig
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