1. 腐烂（过程）；腐败（过程）
Putrefaction is the process of decay.

1. moral perversion
impairment of virtue and moral principles

e.g. the luxury and corruption among the upper classes
moral degeneracy followed intellectual degeneration
its brothels, its opium parlors, its depravity
Rome had fallen into moral putrefaction

Synonym: corruptiondegeneracydepravationdepravity

2. (biology) the process of decay caused by bacterial or fungal action

Synonym: decompositionrotrotting

3. a state of decay usually accompanied by an offensive odor

Synonym: rot