Opsonize

Part of speech: verb

Definitions

1. To improve the ability of immune cells to identify and engulf pathogens by covering them with specific proteins or antibodies
2. To increase the ease with which immune cells can recognize and consume harmful microorganisms by applying targeted markers on their surfaces
3. To enhance the recognition and ingestion of pathogens by immune cells through the attachment of specific proteins or antibodies to their surfaces

Etymology: Ancient Greek "opson" meant cooked food eaten with bread, a sense that covered fish, meat, and other relishes served alongside the staple grain. The word was a kind of culinary accompaniment rather than anything medical, and that everyday origin is what makes the modern term so striking. English "opsonize" is built from "opson" plus the suffix "-ize", which turns a noun into a verb meaning to make or treat in a certain way. The link to food runs through the idea of preparation: in immunology, opsonins are substances that coat a microbe so that phagocytes, the immune cells that engulf invaders, can take hold of it more readily. The coating acts like a seasoning that makes the target more palatable to the cell. The term was coined in medical science from the Greek root, not inherited from ancient physicians. It names a process that the ancient world could not have described, so its food-based vocabulary is a deliberate borrowing of an old word for a new purpose.