geological

adjective

geo·​log·​i·​cal ˌjē-ə-ˈlä-ji-kəl 

variants or less commonly geologic

ˌjē-ə-ˈlä-jik 

: of, relating to, or based on geology

geologically

ˌjē-ə-ˈlä-ji-k(ə-)lē 

adverb

Examples of geological in a Sentence

Recent Examples on the Web

Chinese Mars researchers are selecting candidate landing sites for the mission based on factors that include geological age, history of water activity, habitability and the potential for preserving biosignatures. — Leonard David, Space.com, 9 Sep. 2026

While the geological events would occur anyway, one problem is that the onset of the super El Nino phenomenon is setting off more risks of extreme weather worldwide. — Justina Lee, CNBC, 8 Sep. 2026

Much of it entered the oceans over geological timescales as uranium was weathered from rocks and carried into the sea. — Kaif Shaikh, Interesting Engineering, 5 Sep. 2026

Arkansas diamonds, Maine tourmalines, Montana sapphires, North Carolina emeralds and California kunzite trace a geological map of the country and Tiffany’s use of its natural resources. — Thomas Waller, Footwear News, 3 Sep. 2026

Word History

Etymology

see geology

First Known Use

circa 1723, in the meaning defined above

Rhymes for geological

• illogical
• zoological
• aetiological
• anthropological
• archaeological
• archeological
• axiological
• climatological
• deontological
• dermatological
• eschatological
• etiological