cy·​to·​tox·​ic | \ ˌsī-tə-ˈtäk-sik How to pronounce cytotoxic (audio) \

Definition of cytotoxic

1 : of or relating to a cytotoxin
2 : toxic to cells cytotoxic drugs

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Other Words from cytotoxic

cytotoxicity \ ˌsī-​tə-​(ˌ)täk-​ˈsi-​sə-​tē How to pronounce cytotoxicity (audio) \ noun

Examples of cytotoxic in a Sentence

Recent Examples on the Web Then Allison and his colleagues discovered that a molecule called cytotoxic T lymphocyte antigen-4 (CTLA-4) acts as a checkpoint, or built-in brake, on T cells. Quanta Magazine, "The Contrarian Who Cures Cancers," 3 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cytotoxic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of cytotoxic

1902, in the meaning defined at sense 2

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Time Traveler for cytotoxic

Time Traveler

The first known use of cytotoxic was in 1902

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Cite this Entry

“Cytotoxic.” Dictionary, Merriam-Webster, Accessed 27 Sep. 2020.

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More Definitions for cytotoxic


cy·​to·​tox·​ic | \ ˌsīt-ə-ˈtäk-sik How to pronounce cytotoxic (audio) \

Medical Definition of cytotoxic

: toxic to cells cytotoxic lymphocytes cytotoxic drugs

Other Words from cytotoxic

cytotoxicity \ -​(ˌ)täk-​ˈsis-​ət-​ē How to pronounce cytotoxicity (audio) \ noun, plural cytotoxicities

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