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.
There are 52 switchbacks on this trail, which was completed in 1918, with panoramic views along the way and an up-close look at the rock’s geological intricacies. Molly Allen, Travel + Leisure, 5 Feb. 2026 As the continents sheared and twisted unevenly, local forces squeezed together thin ribbons of crust and popped them up like geological meerkats, isolating and slicing them off. Evan Howell, Scientific American, 4 Feb. 2026 The plan also foresees coordination on investment, geological mapping and rapid responses to supply chain disruptions. Spencer Kimball, CNBC, 4 Feb. 2026 However, South Africa’s history was wrought with geological conflict as erupting volcanoes destroyed traces of preexisting dinosaurs while those beasts were still alive. Maria Mocerino, Interesting Engineering, 1 Feb. 2026 Adding to the region’s geological drama, black, glassy obsidian rocks—formed by volcanic lava—are scattered throughout certain vineyards. Liz Thach, Forbes.com, 30 Jan. 2026 In other words, geological and climate changes will present immense challenges for those looking to build mining infrastructure. Matthew Adams, Fort Worth Star-Telegram, 29 Jan. 2026 Until modern times, glaciers lived on geological time, measuring change in centuries and millennia, not months and years. Marya E. Gates, IndieWire, 27 Jan. 2026 Unlike Earth, where geological activity and an active atmosphere have erased much of the planet's earliest record, the moon has remained largely unchanged, making its polar ice a uniquely valuable scientific archive. Sharmila Kuthunur, Space.com, 26 Jan. 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 10 Feb. 2026.

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