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
If you have never been vaccinated against rabies, you will be given both the human rabies immunoglobulin and a rabies vaccine.
—Katia Hetter, CNN Money, 18 Sep. 2025
While vaccines can take a week or two to take full effect, immunoglobulin provides immediate protection from the virus, Wang said.
—Liz Szabo, NBC news, 9 Sep. 2025
These proteins, such as immunoglobulins that support the immune system, are thought to help digestion and boost immunity.
—Julie Scott, Verywell Health, 25 Aug. 2025
The scientists combined MoNi with water and therapeutic proteins including albumin, human immunoglobulin, and a monoclonal antibody treatment for COVID-19.
—New Atlas, 22 Aug. 2025
See All Example Sentences for immunoglobulin
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Katia Hetter, CNN Money, 18 Sep. 2025
While vaccines can take a week or two to take full effect, immunoglobulin provides immediate protection from the virus, Wang said.
—Liz Szabo, NBC news, 9 Sep. 2025
These proteins, such as immunoglobulins that support the immune system, are thought to help digestion and boost immunity.
—Julie Scott, Verywell Health, 25 Aug. 2025
The scientists combined MoNi with water and therapeutic proteins including albumin, human immunoglobulin, and a monoclonal antibody treatment for COVID-19.
—New Atlas, 22 Aug. 2025
See All Example Sentences for immunoglobulin
Cite this Entry
“Immunoglobulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immunoglobulin. Accessed 4 Nov. 2025.
Copy CitationMedical Definition
immunoglobulin
noun
im·mu·no·glob·u·lin
-ˈgläb-yə-lən
: antibody
—abbreviation Ig
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