IPA: /ˌoʊvərˈsætʃəˌreɪʃən/
KK: /oʊvərˈsætʃəˌreɪʃən/
The state of being filled with too much of something, often leading to a decrease in quality or effectiveness.
The oversaturation of the market with similar products made it hard for any one brand to stand out.
Oversaturation → It is formed from "over-" (meaning excessively) and "saturare" (from Latin, meaning to fill). The word "oversaturation" means the state of being excessively filled or soaked beyond capacity.
Think of being filled 'excessively' ('over-') — that's why oversaturation means being too full or soaked.