: a lymphocyte (such as a killer T cell or a natural killer cell) with cytotoxic activity
Examples of killer cell in a Sentence
Recent Examples on the WebThe group of immune cells that surge during and after short bouts of exercise, which include neutrophils and natural-killer cells, serve as our frontline defense against invading viruses.
Katarina Zimmer, Outside Online, 27 Mar. 2020 The checkpoint inhibitors allow powerful immune cells to recognize and hone in on cancer cells and co-opt killer cells to destroy them.
Alice Park, Time, 12 July 2018
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'killer cell.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.