hydrology Meaning, Definition & Usage

  1. noun the branch of geology that studies water on the earth and in the atmosphere: its distribution and uses and conservation

WordNet

Hy*drol"o*gy noun
Etymology
Hydro-, 1 + -logy: cf. F. hydrologie.
Definitions
  1. The science of water, its properties, phenomena, and distribution over the earth's surface.

Webster 1913