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  1. the science dealing with the occurrence and distribution of underground water.
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Origin of hydrogeology

First recorded in 1815–25; hydro-1 + geology
Also called hydrology, geohydrology.
Related formshy·dro·ge·o·log·i·cal [hahy-druh-jee-uh-loj-i-kuh l] /ˌhaɪ drəˌdʒi əˈlɒdʒ ɪ kəl/, hy·dro·ge·o·log·ic, adjectivehy·dro·ge·ol·o·gist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for hydrogeology


  1. the branch of geology dealing with the waters below the earth's surface and with the geological aspects of surface waters
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Derived Formshydrogeological, adjectivehydrogeologist, 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

hydrogeology in Science


  1. The scientific study of the occurrence, distribution, and effects of groundwater.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.