Etymology
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macrophage (n.)

"type of large white blood cell with the power to devour foreign debris in the body or other cells or organisms," 1890, from macro- "large" + -phage "eater."

updated on October 27, 2018

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Definitions of macrophage from WordNet

macrophage (n.)
a large phagocyte; some are fixed and other circulate in the blood stream;
From wordnet.princeton.edu, not affiliated with etymonline.