noun. the watery layer of the earth's surface; includes water vapor.
- international waters
- high sea
Example sentences of the word hydrosphere
1. Noun, singular or mass
Hydrogen and oxygen both come from the water in the hydrosphere.
Heat transfer also occurs in the atmosphere and hydrosphere, to name two layers of earth in which convection currents take place.
Students can propose dissertations within the hydrosphere area such as: The 1996 floods and their effect on the path of the Mississippi River.