1. to treat (a pathogenic microorganism) with opsonin, thereby making it more susceptible to phagocytosis
Usage: British spelling (American: opsonizes); medical/immunology term; third-person singular present tense

Examples

• The immune system opsonises bacteria to enhance their destruction by white blood cells.
• Antibodies opsonises pathogens by coating their surface.
• The serum opsonises the microorganisms in the laboratory culture.
• When the body opsonises invading cells, phagocytes can more easily recognize and eliminate them.