致癌 zhì'ái carcinogenic Origin Definitions Defs Strokes Stroke Words Sentences Sents 致癌物 zhì'áiwù carcinogen any substance or agent that tends to produce a cancer致癌作用 zhì'áizuòyòng carcinogenesis The process by which normal cells are transformed into cancer cells; the production or development of cancer致癌物质 zhì'áiwùzhì carcinogen carcinogen; cancer-causing substance