You searched for: “most biodegradable”
biodegradable (adjective), more biodegradable, most biodegradable
Relating to organic compounds that can be decomposed by natural processes: Environmentally friendly people are interested in using only biodegradable detergents, which can be broken down by biological agents, particularly by bacteria, when washing their clothes or dishes.

Most plastics, for example, are not biodegradable and will remain in the environment for ever!

Word Entries at Get Words: “most biodegradable”
biodegradable (adjective), more biodegradable, most biodegradable
Anything capable of being broken down by living organisms, principally bacteria and fungi: In biodegradable substances, such as food and sewage, the natural processes of decay lead to compaction and liquefaction, and to the release of nutrients that are then recycled by the ecosystem.

This entry is located in the following unit: Environment and Ecology Information + (page 1)