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Definition of killer cell noun from the Oxford Advanced Learner's Dictionary

killer cell

noun
 
/ˈkɪlə sel/
 
/ˈkɪlər sel/
(biology)
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  1. a white blood cell that destroys infected cells or cancer cellsTopics Biologyc2
See killer cell in the Oxford Advanced American Dictionary
previously
adverb
 
 
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