[mass noun]matter that settles to the bottom of a liquid; dregs 沉淀物;渣滓 ■(Geology)particulate matter that is carried by water or wind and deposited on the surface of the land or the seabed, and may in time become consolidated into rock (地质)沉积物
verb
[no obj.]settle as sediment 沉淀 ■(of a liquid) deposit a sediment (液体)沉淀 ■[with obj.]deposit (something) as a sediment 沉积 the DNA was sedimented by centrifugation. DNA被用离心过滤法沉淀下来。 [as adj. sedimented]sedimented waste. 沉积废物。
派生 sedimentation noun 语源
mid 16th cent.: from French sédiment or Latin sedimentum 'settling', from sedere 'sit'