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Related to cocarcinogen: carcinogen
A substance or factor that will not promote cancer by itself but can potentiate cancer when acting with carcinogenic agents.
co·car′cin·o·gen′ic (-sə-nə-jĕn′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a substance that can promote cancer when acting with other substances, but which does not promote cancer by itself
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014