geological

adjective

geo·​log·​i·​cal ˌjē-ə-ˈlä-ji-kəl How to pronounce geological (audio)
variants or less commonly geologic
: of, relating to, or based on geology
geologically adverb

Examples of geological in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Dosa earned an Academy Award nomination for 2022’s Fire of Love, the story of vulcanologists Katia and Maurice Krafft who furthered the world’s understanding of intense geological forces, but whose lives were claimed in a volcanic eruption. Matthew Carey, Deadline, 20 Mar. 2026 Scientists must first rule out any possible non-biological explanations for a discovery, meaning the discovery would have to be unexplained by any chemical or geological processes. Mary Magnuson, The Conversation, 20 Mar. 2026 With this more intact geological record, astrobiologists hope Mars can yield not only the first-ever smoking-gun proof of extraterrestrial life but also clearer data on how that life emerged in the first place. Joseph Howlett, Scientific American, 18 Mar. 2026 What One Bone Revealed Cheng-Hsiu Tsai of National Taiwan University and colleagues analyzed the vertebra, which was recovered from the Chiting Formation, a geological deposit near Tainan formed roughly 800,000 to 400,000 years ago. Hanna Wickes, Miami Herald, 17 Mar. 2026 One Vertebra, One Giant Snake The fossil was recovered from the Chiting Formation, a geological deposit in southwestern Taiwan formed roughly 800,000 to 400,000 years ago during the Pleistocene epoch. Hanna Wickes, Fort Worth Star-Telegram, 17 Mar. 2026 The vertebra was recovered from the Chiting Formation, a geological deposit formed roughly 800,000 to 400,000 years ago during the Pleistocene epoch. Hanna Wickes, Charlotte Observer, 17 Mar. 2026 An expert chimes in Ralph Harvey, a geological sciences professor at Case Western Reserve University, told the Akron Beacon Journal,part of the USA TODAY Network, that such phenomena occur several times a day but are rarely viewed in populated areas. Michelle Del Rey, USA Today, 17 Mar. 2026 The carbon cycle is a continuous, biogeochemical exchange of carbon among the atmosphere, oceans, land and geological reservoirs, such as rocks and fossil fuels. Susanne Rust follow, Los Angeles Times, 16 Mar. 2026

Word History

Etymology

see geology

First Known Use

circa 1723, in the meaning defined above

Time Traveler
The first known use of geological was circa 1723

Browse Nearby Words

Cite this Entry

“Geological.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geological. Accessed 30 Mar. 2026.

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