The Collaborative International Dictionary of English v.0.48:
Putrescence \Pu*tres"cence\, n. The state of being putrescent; putrescent matter. [1913 Webster]WordNet (r) 3.0 (2006):
putrescence n 1: in a state of progressive putrefaction [syn: putrescence, putridness, rottenness, corruption] 2: the quality of rotting and becoming putrid [syn: putrescence, rottenness]