Main Entry: hy·drol·o·gy

Pronunciation: \hī-ˈdrä-lə-jē\

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 \ˌhī-drə-ˈlä-jik\ or hy·dro·log·i·cal \-ji-kəl\ adjective

— hy·dro·log·i·cal·ly \-ji-k(ə-)lē\ adverb

— hy·drol·o·gist \hī-ˈdrä-lə-jist\ noun