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.
However, the experiment can't tell if the chemicals come from ancient Martian life or non-biological geological processes. Leonard David, Space.com, 21 Apr. 2026 Brian Hynek, a professor in the department of geological sciences at the University of Colorado Boulder, agrees that while the study bolsters the evidence for a past ocean, the appearance of Earth’s continental shelves is partly due to the role of plate tectonics, which Mars never had. Jacopo Prisco, CNN Money, 20 Apr. 2026 The geological history of this valley goes back 300 to 350 million years when Pine Creek began cutting across what eventually became the Allegheny Plateau. Anthony Fredericks, Travel + Leisure, 12 Apr. 2026 The Towers of Time, three impressive 27-foot stone towers greet you at the entrance, paying tribute to the origins of life, geological formations, and animals found in the region. Joie Probst, Midwest Living, 10 Apr. 2026 There are other constraints too, including staffing shortages and geological considerations. Camila Domonoske, NPR, 9 Apr. 2026 In addition to logistical challenges, the canyon’s geological conditions posed further engineering difficulties. Aman Kumar, Encyclopedia Britannica, 8 Apr. 2026 The species has endured across geological ages while countless other animals went extinct. Samantha Agate, Fort Worth Star-Telegram, 8 Apr. 2026 To delve to the (geological) heart of the matter, scientists want to know the moon’s deepest secret—what’s happening at its most abyssal depths. Robin George Andrews, Scientific American, 7 Apr. 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.grautoblog.com/dictionary/geological. Accessed 23 Apr. 2026.

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