geo·​log·​ic | \ˌjē-ə-ˈlä-jik \
variants: or geological \ ˌjē-​ə-​ˈlä-​ji-​kəl \

Definition of geologic 

: of, relating to, or based on geology

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Other Words from geologic

geologically \ ˌjē-​ə-​ˈlä-​ji-​k(ə-​)lē \ adverb

Examples of geologic in a Sentence

Recent Examples on the Web

First, get a good geologic map of your area (this interactive one from the U.S. Geological Survey is a personal favorite). Sarah Kaplan, Washington Post, "Fossil hunting 101: Lessons from a self-taught dinosaur tracker," 16 June 2018 Specifically, the researchers were interested in what happened to the ice sheet during the Pliocene epoch, the geologic period from about 5.4 million years ago to around 2.5 million. Avery Thompson, Popular Mechanics, "Antarctica's Ice May Be More Durable Than We Thought," 13 June 2018 The study is also important for the way the researchers dated the cores and presented a timeline of the geologic past, according to Steve Brusatte, a paleontologist at the University of Edinburgh, who was not involved in the work. Jason Daley, Smithsonian, "Venus and Jupiter May Meddle With Earth’s Orbit and Climate," 10 May 2018 Gangidine and his team routinely travel to Yellowstone to trek into the park’s hydrothermal fields—grassy plains pocketed with gassy geologic features—and collect samples. Ula Chrobak, Outside Online, "This Scientist Learns About Life on Mars in Yellowstone," 18 June 2018 The quake happened about 54 miles offshore of the southern state of Chiapas, just to the east of an undersea geologic feature called the Middle America Trench. Josh Fischman, Scientific American, "Why the Giant Mexican Earthquake Happened," 8 Sep. 2017 While giant sand dunes have been documented in many images of the Red Planet, these new geologic features were first discovered on Earth in 2016 and only observed on Mars earlier this year. Frankie Schembri, Science | AAAS, "‘Ghost dunes’ spotted on Mars," 11 July 2018 In 2005, when a friend told him Yosemite was hiring its first staff geologist, Stock jumped at the chance; he’s been conducting rock fall research and other geologic studies for the park service ever since. San Francisco Chronicle, "Insider: Yosemite geologist shares his park favorites," 25 Apr. 2018 The man who had previously limited himself to describing the topographic and geologic formations of the western lands had now waded directly into populist politics, driven by isohyets and tables of rainfall-per-acre statistics. Johnforristerross, Longreads, "Taming the Great American Desert," 2 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geologic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of geologic

1791, in the meaning defined above

History and Etymology for geologic

see geology

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Statistics for geologic

Last Updated

1 Nov 2018

Look-up Popularity

Time Traveler for geologic

The first known use of geologic was in 1791

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More Definitions for geologic


geo·​log·​ic | \ˌjē-ə-ˈlä-jik \
variants: or geological \ -​ji-​kəl \

Kids Definition of geologic

: of or relating to geology geologic formations

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Comments on geologic

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