单词 | sea level |
释义 | sea levelSEE SYNONYMS FOR sea level ON THESAURUS.COM nounthe horizontal plane or level corresponding to the surface of the sea at mean level between high and low tide. Origin of sea levelFirst recorded in 1800–10 Words nearby sea levelsea legs, sealer, sealery, sea letter, sea lettuce, sea level, sea-level pressure, sealift, sea lily, sealing wax, sea lion Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for sea levelBritish Dictionary definitions for sea levelsea level nounthe 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 Scientific definitions for sea levelsea 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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