1. The science which treats of the constitution and structure of the earth's crust, with its rocks and their inorganic and organic contents, the successive changes these have undergone, and the causes.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• genoligy,
• geoglogy,
• geanology,
• georgy,
• geoligy,
• genelogy,
• geniology,
• jeolosy,
• euology,
• genalogy,
• gelosy,
• elogy,
• groogy,
• teology,
• pology,
• gnecology,
• genology,
• bology,
• geologis,
• geolgy

• -ology,
• ecology.

The adjective form of "geology" is "geological".

The plural of the "geology" can be the "geologies".

The singular of the "geology" can be the "geology".