• (v. i.) To become putrescent or putrid; to putrefy.
Pu·tresce' intransitive verb [ See Putrescent .] To become putrescent or putrid; to putrefy. « Ordinarily sewage does not putresce until from twenty-four to sixty hours after its discharge.» Nature. 
putresce To become putrescent or putrid; to putrefy: 'Ordinarily sewage does not putresce until from twenty-four to sixty hours after its discharge.