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Definition of: leucocyte
(l
′kə·sīt) noun Biol.
The most commonly occurring type of the white or colorless blood corpuscle: a large, nucleated ameboid cell formed in red bone marrow, constituting an important agent in protection against infectious diseases. Also leukocyte. [<LEUCO- + -CYTE]
—leu′co·cyt′ic (-sit′ik) adjective
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