immunoglobulin
noun/ˌɪmjʊnoʊˈɡlɒbjʊlɪn/
Frequency rank: #17,889 most common English word
Meaning
A protein produced by the immune system that functions as an antibody to fight pathogens.

Example sentence
The doctor measured the patient's immunoglobulin levels to check for signs of infection.
Synonyms & related words
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