n.
Pronunciation: - ˌ sfir
Function: noun
Etymology: International Scientific Vocabulary
Date: 1887
: 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 \ ˌ h ī -dr ə - ' sfir-ik, - ' sfer- \ adjective