[kee-moh-proh-fuh-lak-sis, -prof-uh-, kem-oh-]

Origin of chemoprophylaxis

First recorded in 1935–40; chemo- + prophylaxis
Also called che·mo·pre·ven·tion [kee-moh-pri-ven-shuh n] /ˌki moʊ prɪˈvɛn ʃən/.
Related formsche·mo·pro·phy·lac·tic [kee-moh-proh-fuh-lak-tik, kem-oh-] /ˌki moʊˌproʊ fəˈlæk tɪk, ˌkɛm oʊ-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for chemoprophylaxis


  1. the prevention of disease using chemical drugs
Derived Formschemoprophylactic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

chemoprophylaxis in Medicine


  1. Disease prevention by use of chemicals or drugs.
Related formsche′mo•pro′phy•lactic (-lăktĭk) n. adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.