Main Entry: ge·ol·o·gy

Pronunciation: \jē-ˈä-lə-jē\

Function: noun

Inflected Form(s): plural ge·ol·o·gies

Etymology: New Latin geologia, from ge- + -logia -logy

Date: 1735

1 a : a science that deals with the history of the earth and its life especially as recorded in rocks b : a study of the solid matter of a celestial body (as the moon)
2 : geologic features
3 : a treatise on geology

— ge·ol·o·gist \-jist\ noun