Dictionary

natural killer cell

noun

Definition of NATURAL KILLER CELL

:  a large granular lymphocyte capable of killing a tumor or microbial cell without prior exposure to the target cell and without having it presented with or marked by a histocompatibility antigen —called also NK cell

First Known Use of NATURAL KILLER CELL

1975

natural killer cell

noun    (Medical Dictionary)

Medical Definition of NATURAL KILLER CELL

:  a large granular lymphocyte capable especially of destroying tumor cells or virally infected cells without prior exposure to the target cell and without having it presented with or marked by a histocompatibility antigen—called also NK cell

Browse

Next Word in the Dictionary: natural languagePrevious Word in the Dictionary: natural keyAll Words Near: natural killer cell
April 02, 2015
capricious Hear it
impulsive or unpredictable
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears