Pronunciation: ˌ j ē - ō -h ī - ' drä-l ə -j ē
Function: noun
Date: circa 1909
: a science that deals with the character, source, and mode of occurrence of underground water
– geo · hy · dro · log · ic \ - ˌ h ī -dr ə - ' lä-jik \ adjective
– geo · hy · drol · o · gist \ -h ī - ' drä-l ə -jist \ noun