[ hahy-drol-uh-jee ]

  1. the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere.

  2. hydrogeology; geohydrology.

Origin of hydrology

First recorded in 1755–65; hydro-1 + -logy

Other words from hydrology

  • hy·dro·log·ic [hahy-druh-loj-ik], /ˌhaɪ drəˈlɒdʒ ɪk/, hy·dro·log·i·cal, adjective
  • hy·dro·log·i·cal·ly, adverb
  • hy·drol·o·gist, noun

Words Nearby hydrology

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How to use hydrology in a sentence

British Dictionary definitions for hydrology


/ (haɪˈdrɒlədʒɪ) /

  1. the study of the distribution, conservation, use, etc, of the water of the earth and its atmosphere, particularly at the land surface

Derived forms of hydrology

  • hydrologic (ˌhaɪdrəˈlɒdʒɪk) or hydrological, adjective
  • hydrologically, adverb
  • hydrologist, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for hydrology


[ hī-drŏlə-jē ]

  1. The scientific study of the properties, distribution, and effects of water as a liquid, solid, or gas on the Earth's surface, in the soil and underlying rocks, and in the atmosphere.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.