Pronunciation: ˌ k ō -kär- ' si-n ə -j ə n, k ō - ' kär-s ə -n ə - ˌ jen
Function: noun
Date: 1938
: an agent that aggravates the carcinogenic effects of another substance
– co · car · cin · o · gen · ic \ ˌ k ō - ˌ kär-s ə -n ō - ' je-nik \ adjective