che·​mo·​pro·​phy·​lax·​is | \ ˌkē-mō-ˌprō-fə-ˈlak-səs How to pronounce chemoprophylaxis (audio) also -ˌprä-fə- \

Definition of chemoprophylaxis

: the prevention of infectious disease by the use of chemical agents

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Other Words from chemoprophylaxis

chemoprophylactic \ ˌkē-​mō-​prō-​fə-​ˈlak-​tik How to pronounce chemoprophylactic (audio) also  -​ˌprä-​fə-​ \ adjective

Examples of chemoprophylaxis in a Sentence

Recent Examples on the Web The placing of health care workers under chemoprophylaxis should not instill a sense of false security. Paul Bedard, Washington Examiner, "'Advisory': India prescribes Trump-touted drug to prevent virus," 24 Mar. 2020 Chloroquine is used to treat malaria, as well as in chemoprophylaxis, which is the administering of drugs to prevent the development of disease, according to the US Centers for Disease Control and Prevention. Eliott C. Mclaughlin, CNN, "Chloroquine and hydroxychloroquine: what to know about the potential coronavirus drugs," 23 Mar. 2020

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

First Known Use of chemoprophylaxis

1931, in the meaning defined above

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The first known use of chemoprophylaxis was in 1931

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Cite this Entry

“Chemoprophylaxis.” Dictionary, Merriam-Webster, Accessed 29 Sep. 2020.

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More Definitions for chemoprophylaxis


che·​mo·​pro·​phy·​lax·​is | \ -ˌprō-fə-ˈlak-səs also -ˌpräf-ə- \
plural chemoprophylaxes\ -​ˌsēz How to pronounce chemoprophylaxes (audio) \

Medical Definition of chemoprophylaxis

: the prevention of infectious disease by the use of chemical agents

Other Words from chemoprophylaxis

chemoprophylactic \ -​ˈlak-​tik How to pronounce chemoprophylactic (audio) \ adjective

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