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Definition of "alluvium" []

  • Sediment deposited by flowing water, as in a riverbed, flood plain, or delta. Also called alluvion. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "alluvium" in a sentence
  • "Thus, it does not show the extensive glacial deposits of the North Central and Northeastern States, the deep residuum of the Southeastern and South Central States, the relatively thin alluvium along many major rivers and basins, and extensive eolian deposits on the high plains."
  • "As the shallow lake spreads under the boughs of the surrounding trees, it deposits a blanket of rich, fertilizing soil called alluvium."
  • "The native of the alluvium is another being from the native of the great mineral State."