沈殿

ちんでん · chinden · JLPT N1 · noun

settlement

🪨 沈 = sink; 沈殿 = solids sink and settle to the bottom of a liquid

The key is 沈 (to sink). In chemistry, 沈殿 means a solid dropping out of a solution, and it also describes sediment settling to the bottom of a liquid.

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