pu·tres·cent 
(py-trĕsənt)
(py-trĕsənt)adj.
1. Becoming putrid; putrefying.
2. Of or relating to putrefaction.
[Latin putrēscēns, putrēscent-, present participle of putrēscere, to rot, inchoative of putrēre, to be rotten, from puter, putr-, rotten; see p- in the Appendix of Indo-European roots.]