killer cell Hear it!

killer cell definition

killer cell

any of various cells that destroy germs, infected cells, etc.; esp., a lymphocyte (killer T cell) that destroys infected or cancerous cells by releasing proteins that damage the cell membranes of the target cells

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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