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sand bar

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noun
  1. a bar of sand formed in a river or sea by the action of tides or currents.
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Origin of sand bar

First recorded in 1760–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for sandbar

sand bar

noun
  1. a ridge of sand in a river or sea, built up by the action of tides, currents, etc, and often exposed at low tide
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sandbar

n.

1755, from sand (n.) + bar (n.1).

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Online Etymology Dictionary, © 2010 Douglas Harper

sandbar in Science

sandbar

[săndbär′]
  1. A long mass or low ridge of submerged or partially exposed sand built up in the water along a shore or beach by the action of waves or currents.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.