Sediment is the accumulation of sand and dirt that settles in the bottom of lakes. Sediment is also what you get in the bottom of a glass of iced tea when the sugar doesn’t all dissolve.

The noun sediment comes from the Latin word sedere, meaning “to settle,” or “sit.” Sediment is the little bits of solids that sink to the bottom of a container of liquid, whether that container is a body of water or a holding tank at a sewage treatment plant. Millions of years ago, lakes dried up and glaciers compressed their sediment. In this sedimentary rock, fossils are found, giving us clues about prehistoric life.

Definitions of sediment
  1. noun
    matter that has been deposited by some natural process
    synonyms: deposit
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    alluvial deposit, alluvial sediment, alluvion, alluvium
    clay or silt or gravel carried by rushing streams and deposited where the stream slows down
    dregs, settlings
    sediment that has settled at the bottom of a liquid
    the sediment from fermentation of an alcoholic beverage
    lick, salt lick
    a salt deposit that animals regularly lick
    the sediment that is left after the evaporation of seawater
    a low triangular area of alluvial deposits where a river divides before entering a larger body of water
    dregs consisting of solid particles (especially of coffee) that form a residue
    an alluvial deposit that contains particles of some valuable mineral
    type of:
    that which has mass and occupies space
  2. verb
    deposit as a sediment
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    type of:
    deposit, fix, posit, situate
    put (something somewhere) firmly
  3. verb
    settle as sediment
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    type of:
    settle, settle down
    settle into a position, usually on a surface or ground
Word Family

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