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

Durupınar is a natural geological formation composed of sedimentary material rich in iron oxides. — Eric Vanden Eykel, The Conversation, 6 Oct. 2026

Issuance of an evaluation report, anticipated later this month, will support standardized deployment of the baseline reactor design across diverse geological settings. — Aman Tripathi, Interesting Engineering, 3 Oct. 2026

Within 80 or so million years—the blink of an eye in geological terms—the first transitional forms between bryophytes and vascular plants had emerged, including ferns. — Literary Hub, 2 Oct. 2026

With its affinities for isolation and, at times, imposing scale, Land art conjures archaeology and the geological sublime—vast expanses of space and time. — Jeffrey Weiss, Artforum, 1 Oct. 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