Definition of sediment noun from the Oxford Advanced American Dictionary

     

    sediment

     noun
    noun
    NAmE//ˈsɛdəmənt//
     
    [uncountable]
     
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  1. 1the solid material that settles at the bottom of a liquid
  2. 2(geology) sand, stones, mud, etc. carried by water or wind and left, for example, on the bottom of a lake, river, etc.
See the Oxford Advanced Learner's Dictionary entry: sediment