(of a person whose blood has been tested for a specific disease, such as AIDS) showing a serological reaction indicating the presence of the disease
WordReference Random House Unabridged Dictionary of American English © 2026
se•ro•pos•i•tive
(sēr′ō poz′i tiv),USA pronunciation adj. [Med.]
- Immunology, Medicineshowing a significant level of serum antibodies, or other immunologic marker in the serum, indicating previous exposure to the infectious agent being tested.
- sero- + positive 1930–35
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