noun Date: circa 1909 a science that deals with the character, source, and mode of occurrence of underground water, geohydrologic adjective geohydrologist noun
GEOHYDROLOGY
Meaning of GEOHYDROLOGY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012