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sea level

the horizontal plane or level corresponding to the surface of the sea at mean level between high and low tide.
Origin of sea level
1800-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for sea level
  • Gardens high above sea level get longer and colder winters, often with intense sunlight, and lower night temperatures all year.
  • Most scientists figured that the dinosaurs had been done in by a change of climate or a change in sea level.
  • So the engineers can simulate conditions along a humid, hot coastline at sea level, or atop an arid and cold mountain.
  • sea level does not move along the rod which appears shrunk for muon.
  • When the planet cools, ice sheets grow on continents and the sea level falls.
  • Yet this is the top, the shiny part of the iceberg that rises above sea level.
  • It has also spread to the west and down to sea level.
  • Observed sea level rises and ice melt only show the world has warmed, as it has done since the last ice age.
  • Yet the sea level here is slowly but steadily rising.
  • For the latest climate crock interviewing climatologists on sea level rise and the emerging hockey stick there.
British Dictionary definitions for sea level

sea level

the level of the surface of the sea with respect to the land, taken to be the mean level between high and low tide, and used as a standard base for measuring heights and depths
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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sea level in Science
sea level  
The level of the ocean's surface. Sea level at a particular location changes regularly with the tides and irregularly due to conditions such as wind and currents. Other factors that contribute to such fluctuation include water temperature and salinity, air pressure, seasonal changes, the amount of stream runoff, and the amount of water that is stored as ice or snow. ◇ The reference point used as a standard for determining terrestrial and atmospheric elevation or ocean depths is called the mean sea level and is calculated as the average of hourly tide levels measured by mechanical tide gauges over extended periods of time.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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