Something that is biodegradable breaks down or decays naturally without any special scientific treatment, and can therefore be thrown away without causing pollution.
例句
...a natural and totally biodegradable plastic.可完全生物降解的天然塑料
英汉词典释义
adj.
能进行生物降解的,能起生物递解分解作用的
The company had falsely claimed that its products were biodegradable.公司谎称他们的产品是可生物降解的。