noun, noun or participle which takes 'suru', intransitive verb
Refers to the process of organic matter or structures breaking down over time, often due to natural causes. Can be used both literally and figuratively.
古い木造の家は腐朽が進んでいる。
The old wooden house is decaying.
湿気が多いと木材が腐朽しやすい。
Wood tends to rot easily when there is a lot of moisture.