Dictionary.net

A cell possessing the property of ingesting bacteria, foreign particles, and other cells. Phagocytes are divided into two general classes: microphags, small polymorphonuclear leucocytes which ingest chiefly bacteria; and macrophags, large mononucleated cells which are largely scavengers, ingesting dead tissue and degenerated cells; the latter are produced mainly by proliferation of the fixed connective-tissue cells.

A colour-less blood-corpuscle which tends to take in and destroy foreign particles.

Any cell that destroys micro-organisms or harmful cells.

Syn.: devouring, or wandering, cell, leukocyte, white blood corpuscle, carrier cell. Of Metchnikoff, any ameboid cell regarded as a structure capable of inclosing and digesting solid particles. In the body they act.

In absorbing healthy tissues, as in the metamorphosis of batrachia and the development of bone.

In active degeneration of parts in disease; and .

As a protective mechanism, removing bacteria and minute solid masses that have reached the tissues. [Gr.]