n.
Pronunciation: h ī - ' drä-l ə -j ē
Function: noun
Etymology: New Latin hydrologia, from Latin hydr- + -logia -logy
Date: 1762
: a science dealing with the properties, distribution, and circulation of water on and below the earth's surface and in the atmosphere
– hy · dro · log · ic \ ˌ h ī -dr ə - ' lä-jik \ or hy · dro · log · i · cal \ -ji-k ə l \ adjective
– hy · dro · log · i · cal · ly \ -ji-k( ə -)l ē \ adverb
– hy · drol · o · gist \ h ī - ' drä-l ə -jist \ noun