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 some exposure cases, immunoglobulin given within six days may also help prevent or lessen illness.
—Jennifer McRae, CBS News, 6 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
IgA nephropathy, also known as Berger’s disease, occurs when immunoglobulin A (IgA) antibodies accumulate in the kidneys and cause damage.
—Carrie Madormo, Health, 26 Jan. 2026
Key Takeaways The rate of progression of immunoglobulin A nephropathy (IgAN) can vary, with many people remaining stable for decades and others progressing rapidly to kidney failure.
—Md Published, Verywell Health, 12 Jan. 2026
See All Example Sentences for immunoglobulin
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Jennifer McRae, CBS News, 6 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
IgA nephropathy, also known as Berger’s disease, occurs when immunoglobulin A (IgA) antibodies accumulate in the kidneys and cause damage.
—Carrie Madormo, Health, 26 Jan. 2026
Key Takeaways The rate of progression of immunoglobulin A nephropathy (IgAN) can vary, with many people remaining stable for decades and others progressing rapidly to kidney failure.
—Md Published, Verywell Health, 12 Jan. 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 10 Mar. 2026.
Copy CitationMedical Definition
immunoglobulin
noun
im·mu·no·glob·u·lin
-ˈgläb-yə-lən
: antibody
—abbreviation Ig
Love words? Need even more definitions?
Merriam-Webster unabridged
