IPA: /dʒiˈɒlədʒɪkəl/
KK: /dʒiˈɑlədʒɪkəl/
Related to the study of the Earth's structure, its history, and the processes that shape it.
The geological survey revealed important information about the region's natural resources.
Geological → It is formed from "geo-" (from Greek "gē", meaning earth) and "-logical" (from Greek "logia", meaning study or discourse). The word "geological" refers to the study or discourse concerning the earth.
Think of 'geo-' meaning earth and '-logical' meaning study — geological relates to the study of the earth.