Pus corpuscle

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noun, plural: pus cells

A dead polymorphonuclear white blood cell, i.e. neutrophil, found in pus.


Pus corpuscles, together with infectious agents, cell debris, and tissue fluid, are the constituents of the pus formed at the site of infection or injury. They are neutrophils that have reached the site of infection as an immune response against infectious organisms (such as bacteria). The neutrophils engulf and kill the infectious foreign bodies, but eventually succumb in the process, and become part of this viscous exudates.

Also called: pus cell, pyocyte.