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English definition of “hydrosphere”

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hydrosphere

noun [U]  /ˈhɑɪ·drəˌsfɪər/ us  
earth science all of the water on the earth's surface, such as the seas, lakes, and ice, and sometimes also including water above the earth's surface, such as clouds
(Definition of hydrosphere from the Cambridge Academic Content Dictionary © Cambridge University Press)
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