- capable of decaying through the action of living organisms: biodegradable paper; biodegradable detergent.
- (of sewage constituents, packaging material, etc) capable of being decomposed by bacteria or other biological means
- Capable of being decomposed by biological agents, especially bacteria.
- Capable of being decomposed by the action of biological agents, especially bacteria.
Material that, left to itself, will be decomposed by natural processes.