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hydrology

[hahy-drol-uh-jee]
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noun
  1. the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere.
  2. hydrogeology; geohydrology.
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Origin of hydrology

First recorded in 1755–65; hydro-1 + -logy
Related formshy·dro·log·ic [hahy-druh-loj-ik] /ˌhaɪ drəˈlɒdʒ ɪk/, hy·dro·log·i·cal, adjectivehy·dro·log·i·cal·ly, adverbhy·drol·o·gist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for hydrologist

hydrology

noun
  1. the study of the distribution, conservation, use, etc, of the water of the earth and its atmosphere, particularly at the land surface
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Derived Formshydrologic (ˌhaɪdrəˈlɒdʒɪk) or hydrological, adjectivehydrologically, adverbhydrologist, 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

Word Origin and History for hydrologist

hydrology

n.

1762, from hydro- + -logy. Related: Hydrologist; hydrological (1660s).

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Online Etymology Dictionary, © 2010 Douglas Harper
hydrologist in Science

hydrology

[hī-drŏl′ə-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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.