IPA: /ˌbaɪoʊdɪˈɡreɪdeɪʃən/
KK: /baɪoʊdɪˈɡreɪdeɪʃən/
The process in which living organisms, especially microorganisms, break down materials into simpler substances.
Biodegradation is essential for recycling organic waste in the environment.
Biodegradation is formed from "bio-" (from Greek "bios", meaning life) and "degradatio" (from Latin "degradare", meaning to reduce in rank or status). The word refers to the process by which living organisms break down substances, thus reducing them to simpler forms.
Think of 'life' ('bio-') breaking down materials, which is what biodegradation means.