沈澱物,沈積
Sediment \Sed"i*ment\, n. [F. s['e]diment, L. sedimentum a settling, fr. sedere to sit, to settle. See {Sit}.] 1. The matter which subsides to the bottom, frrom water or any other liquid; settlings; lees; dregs. 2. (Geol.) The material of which sedimentary rocks are formed.
sediment n : matter deposited by some natural process [syn: {deposit}] v 1: deposit as a sediment 2: settle as sediment