Dictionary

hydrosphere

noun hy·dro·sphere \-ˌsfir\

Definition of HYDROSPHERE

:  the aqueous vapor of the atmosphere; broadly :  the aqueous envelope of the earth including bodies of water and aqueous vapor in the atmosphere
hy·dro·spher·ic \ˌhī-drə-ˈsfir-ik, -ˈsfer-\ adjective

Origin of HYDROSPHERE

International Scientific Vocabulary
First Known Use: 1887

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