\Pu*tres"cent\, a. [L. putrescens, p. pr.of putrescere to grow rotten, v. incho. fr. putrere to be rotten. See {Putrid}.] 1. Becoming putrid or rotten. Externally powerful, although putrescent at the core. --Motley. 2. Of or pertaining to the process of putrefaction; as, a putrescent smell.