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hydrosphere

[hahy-druh-sfeer]
noun
  1. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere.
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Origin of hydrosphere

First recorded in 1885–90; hydro-1 + -sphere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for hydrosphere

hydrosphere

noun
  1. the watery part of the earth's surface, including oceans, lakes, water vapour in the atmosphere, etc
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Derived Formshydrospheric, adjective
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 hydrosphere

n.

1887, from hydro- + sphere.

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Online Etymology Dictionary, © 2010 Douglas Harper

hydrosphere in Science

hydrosphere

[hīdrə-sfîr′]
  1. All of the Earth's water, including surface water (water in oceans, lakes, and rivers), groundwater (water in soil and beneath the Earth's surface), snowcover, ice, and water in the atmosphere, including water vapor. Compare asthenosphere atmosphere lithosphere.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.