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.
Understanding this process is crucial for ensuring the safety of geological waste repositories. Prabhat Ranjan Mishra, Interesting Engineering, 16 Oct. 2025 About 90 minutes from Calama and Chuquicamata mine, one of the largest sources of copper in the world, is the equivalent of a Big Five geological safari. Laura Dannen Redman, Robb Report, 16 Oct. 2025 The image, taken by the OLI-2 (Operational Land Imager-2) instrument on the Landsat-9 satellite, captures the geological and environmental crossroads where desert winds and glacial meltwater converge. Kenna Hughes-Castleberry, Space.com, 16 Oct. 2025 For the new study, the researchers examined more than 130 sediment cores that record roughly 3,000 years of geological history. Jack Tamisiea, Scientific American, 10 Oct. 2025 This geological setting makes earthquakes a daily occurrence, with the Philippine Institute of Volcanology and Seismology (PHIVOLCS) recording an average of 20 tremors per day. Shane Croucher, MSNBC Newsweek, 10 Oct. 2025 Ancient geological processes had left the region’s soil rich in this valuable mineral for modern agriculture, and David had worked in the industry for as long as Michelle could remember. Literary Hub, 10 Oct. 2025 Drilling is expensive, and conventional systems need specific geological conditions. Moones Alamooti, The Conversation, 8 Oct. 2025 Located just south of Ken Caryl, South Valley Park is a gem in the Jefferson County Open Space system, a geological marvel. John Meyer, Denver Post, 29 Sep. 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 19 Oct. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!