ge|ol|o|gy

ge|ol|o|gy «jee OL uh jee», noun, plural -gies.

1. the science that deals with the earth's crust, the layers of which it is composed, and their history.

2. the features of the earth's crust in a place or region; rocks or rock formations of a particular area: »

the geology of North America.

3. the study of the surface structure, composition, or formation of any heavenly body: »

planetary geology, the geology of the moon.

4. a book about geology. Abbr: geol.

╂[< Medieval Latin geologia < Greek gê earth + lógos study of < légein read, select]