Medical Definition of Phagocytosis

Phagocytosis: The process by which a cell engulfs particles such as bacteria, other microorganisms, aged red blood cells, foreign matter, etc. The principal phagocytes include the neutrophils and monocytes (types of white blood cells).

The prefix "phago-" comes from the Greek "phago" meaning "to eat."

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Last Editorial Review: 5/13/2016

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