killer cell
noun
: 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 Web
The 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
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Katarina Zimmer, Outside Online, 27 Mar. 2020
Cite this Entry
“Killer cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/killer%20cell. Accessed 14 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share