1. Pertaining to geology.

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

• gemilogical,
• geolical,
• goelogical,
• bological,
• geologial,
• geologicaly,
• neuological,
• teological,
• geoligical,
• deolgical,
• geneological,
• gelogical,
• geologicly,
• aeological,
• agrological,
• agroloogical,
• geologiocal,
• geologicall,
• reological,
• euligical

• geologic,
• geologic time,
• geologist,
• geologically.

The adjective form of the word "geological" is "geologic".

The plural form of the word "geological" is "geologicals".

The singular form of the word "geological" is "geology"