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An object that is capable of being naturally broken down or deteriorated over time by living organisms.

Biodegradable items are often made from organic substances, such as plant or animal material, or other matter similar enough in composition to be broken down naturally. An example would be a plantable pot, a type that is made of biodegradable material and can be planted (with its plant) directly into the ground – as opposed to a plastic pot, which will not biodegrade. The breaking down process can happen with or without oxygen. Oftentimes, the term “compostable” is used interchangeably with biodegradable; this is close, but not 100-percent accurate. If something is meant to be composted, it means it goes into a compost pile to be broken down into smaller pieces. Biodegradable material does not have to go into a compost pile to break down.