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.
Nearby words
natural harmonics, natural hat trick, natural history, natural immunity, natural justice, natural killer cell, natural language, natural law, natural levee, natural logarithm, natural mutation
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.