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.
This is because fragile remnants or biosignatures (like cells) were crushed, heated, and destroyed by billions of years of geological forces. Mrigakshi Dixit, Interesting Engineering, 17 Nov. 2025 In a paper published last month, the researchers behind the discovery said the structure, named the Jinlin crater, was likely formed by a meteorite hit during the early to mid-Holocene, a geological epoch that started just 12,000 years ago. Andrea Tamayo, Scientific American, 14 Nov. 2025 These findings give scientists valuable insights into the timing and patterns of past ice ages on Mars, helping to refine models of the planet's geological and climatic evolution over millions of years. Samantha Mathewson, Space.com, 14 Nov. 2025 Unlike most geological processes, which unfold over millions of years, rising and falling water levels happen relatively quickly. Jeffrey Kluger, Time, 12 Nov. 2025 Using geological equipment, scientists have successfully analyzed the natural vibrations of the saguaro cactuses, creating a new framework for scientists to study the internal structure of desert plants without needing to cut them open. John Leos, AZCentral.com, 10 Nov. 2025 As noted by Japan’s government and scientific organizations, the geological interplay in this region is responsible for frequent earthquakes and the potential for tsunamis, especially following strong undersea quakes. Hollie Silverman, MSNBC Newsweek, 10 Nov. 2025 Five years later, lawmakers designated Yucca Mountain, a 6,700-foot promontory about 100 miles northwest of Las Vegas, Nevada, as the nation’s sole geological repository. Bob Woods, CNBC, 9 Nov. 2025 Walking among the colorful, striped geological layers feels like stepping inside a giant painting made by nature itself. Karthika Gupta, Travel + Leisure, 7 Nov. 2025

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 25 Nov. 2025.

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