[ hahy-druh-sfeer ]
/ ˈhaɪ drəˌsfɪər /


the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere.

Origin of hydrosphere

First recorded in 1885–90; hydro-1 + -sphere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hydrosphere

British Dictionary definitions for hydrosphere


/ (ˈhaɪdrəˌsfɪə) /


the watery part of the earth's surface, including oceans, lakes, water vapour in the atmosphere, etc

Derived Forms

hydrospheric, 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

Science definitions for hydrosphere


[ hīdrə-sfîr′ ]

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