Silt



GRE Barron TOEFL

解释

GRE 红宝书

• n.淤泥, 淤沙
• ［英］ n.淤泥, 淤沙 ( loose sedimentary material)
• ［类］ artery : plaque / channel : silt ( 血小板阻碍动脉 / 淤泥阻碍河道)
• ［例］ The harbor is being choked up with silt.

Webster Collegiate

I. noun

• Etymology: Middle English cylte, probably of Scandinavian origin; akin to Norwegian dialect sylt beach flooded at high tide; akin to Old High German sulza salt marsh, Old English sealt salt
• Date: 15th century
• 1. loose sedimentary material with rock particles usually 1/20 millimeter or less in diameter; also soil containing 80 percent or more of such silt and less than 12 percent of clay
• 2. a deposit of sediment (as by a river)
• ? silty adjective

II. verb

• Date: 1799
• intransitive verb
  • to become choked or obstructed with silt — often used with up<the channel silted up>
• transitive verb
  • to choke, fill, cover, or obstruct with silt or mud <the beaver had silted the creek — Hugh Fosburgh>
• ? siltation noun

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