The Collaborative International Dictionary of English v.0.48:

Putredinous \Pu*tred"i*nous\, a. [L. putredo rottenness, fr.
   putrere to be rotten. See Putrid.]
   Proceeding from putrefaction, or partaking of the
   putrefactive process; having an offensive smell; stinking;
   rotten.
   [1913 Webster]