Definition of hydrology noun from the Oxford Advanced Learner's Dictionary

 

hydrology

 noun
noun
BrE BrE//haɪˈdrɒlədʒi//
 
; NAmE NAmE//haɪˈdrɑːlədʒi//
 
[uncountable](specialist)
 
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the scientific study of the earth’s water, especially its movement in relation to land
See the Oxford Advanced American Dictionary entry: hydrology