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mean sea level

noun
  1. (in the UK) the sea level used by the Ordnance Survey as a datum level, determined at Newlyn in CornwallSee sea level
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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

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mean sea level in Science

mean sea level

  1. See under sea level.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.