Biodegradable/ˌbaɪəʊdɪˈɡreɪdəbl/ Definition 1 of 1Pro Tip 1/3Environment Friendly Biodegradable highlights environmental care; it's about protecting the Earth. Biodegradable substances help reduce environmental pollution. Pro Tip 2/3Natural Process Biodegradable refers to a natural breakdown, not artificial destruction. Leaves are biodegradable; they decay naturally over time. Pro Tip 3/3Time Factor Biodegradable doesn't mean instant breakdown; it may take time. Even biodegradable materials can linger in the environment for years.