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carcinosis
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carcinogen
car·cin·o·gen [ kaar sínnəjən, krss'nə jèn ] (plural car·cin·o·gens)


noun 
Definition:
 
cancer-causing substance or agent: a substance or agent that can cause cancer. Radiation and some chemicals and viruses are carcinogens.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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