The answer to this can be found more quickly by consulting either an online or hardcopy dictionary.
Here is an online dictionary definition.
Main Entry: ge·ol·o·gy
Pronunciation: jE-'ä-l&-jE
Function: noun
Inflected Form(s): plural -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
I hope this helps. Thanks for asking.
what is geology?