Hy"dro*sphere (?), n. [Pref. hydro- , 1 + sphere.] 1. (Meteor.) The aqueous vapor of the entire atmosphere.

2. (Phys. Geog.) The aqueous envelope of the earth, including the ocean, all lakes, streams, and underground waters, and the aqueous vapor in the atmosphere.

Hy"dro*sphere (?), n. [Pref. hydro- , 1 + sphere.] 1. (Meteor.) The aqueous vapor of the entire atmosphere.

2. (Phys. Geog.) The aqueous envelope of the earth, including the ocean, all lakes, streams, and underground waters, and the aqueous vapor in the atmosphere.

• all the waters of the Earth, as distinguished from the land and the gases of the atmosphere