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Definition of: hydrology
(hī·drol′ə·jē) noun
The branch of physical geography that treats of the waters of the earth, their distribution, characteristics, and effects. [<HYDRO- + -LOGY]
—hy·dro·log·ic (hī′drə·loj′ik) or ·i·cal adjective
—hy′dro·log′i·cal·ly adverb
—hy·drol′o·gist noun
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