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

Illinois has some of the largest reserves of coal in the country, with the energy equivalent of Saudi Arabia’s oil, according to the state’s geological survey. — Adriana Pérez, Chicago Tribune, 22 June 2026

Stanford saw carbon capture and storage as a geological problem, MIT more of an engineering challenge, Bulkin said. — Maddie Stone, ProPublica, 25 June 2026

Over thousands of years, natural geological processes turn CO2 into stone by reacting it with minerals. — Mrigakshi Dixit, Interesting Engineering, 30 June 2026

Luckily, truly devastating events are comparatively rare from a geological standpoint. — Andrew Paul, Popular Science, 24 June 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