natural killer cell
noun Immunology.
a small killer cell that destroys virus-infected cells or tumor cells without activation by an immune system cell or antibody.
Words nearby natural killer cell
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Compare killer T cell.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Medicine definitions for natural killer cell
natural killer cell
n.
A killer cell that is activated by double-stranded RNA and fights off viral infections and tumors.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.