ge·​ol·​o·​gy | \ jē-ˈä-lə-jē \
plural geologies

Definition of geology

1a : a science that deals with the history of the earth and its life especially as recorded in rocks
b : a study of the solid matter of a celestial body (such as the moon)
2 : geologic features the geology of Arizona
3 : a treatise on geology

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Other Words from geology

geologist \ jē-​ˈä-​lə-​jist \ noun

Examples of geology in a Sentence

learning about the geology of Hawaii

Recent Examples on the Web

The richness of the red lets the woman hold her own visually with not just the canyon’s delicate pastels but even its flabbergasting geology. Mark Feeney,, "At Cambridge Public Library, photos in color, in the stacks, in Cambridge," 8 May 2018 Its geology and politics are known to the industry. Vinod Sreeharsha And Clifford Krauss, New York Times, "Brazilian Auction Draws Oil Companies Back to Offshore Drilling," 29 Mar. 2018 Mars 2020, scheduled to launch from Cape Canaveral in July of that year, has four primary science objectives: determine whether life ever arose on Mars, characterize the planet's climate, study its geology, and prepare for human exploration. Jay Bennett, Popular Mechanics, "NASA's Next Great Mars Rover Will Search for Martians and Prepare for Humans to Follow," 17 Jan. 2018 In it, the Major stepped away from the fields of geology and out of academic realms to address a topic that pressed right to the heart of American democracy. Johnforristerross, Longreads, "Taming the Great American Desert," 2 July 2018 Michael Garcia, a professor of geology at the University of Hawaii’s Manoa campus in Honolulu, has a student who is extracting olivine from a 1985 eruption. Washington Post, "NOT REAL NEWS: Erupting Hawaii volcano not raining gemstones," 19 June 2018 Many attribute its signature style to the complex geology of the land. Jay Mcinerney, Town & Country, "A New Era Begins at Château Lafite as Baron de Rothschild Hands Leadership Over to His Daughter," 13 Aug. 2018 BepiColombo is Europe's first mission to the planet, and it is intended as a follow-on to NASA's Messenger spacecraft that spent a period from 2011 to 2015 at Mercury and studied its chemistry, geology, and magnetic field. Eric Berger, Ars Technica, "Two orbiters begin their long journey to Mercury Friday night," 19 Oct. 2018 As part of the SUBSEA project, the robots, named Hercules and Argus, will study the biology, geology and chemistry of the region. Chris Ciaccia, Fox News, "NASA is using underwater robots to explore the deep-sea off the Hawaiian coast," 29 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geology.' 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 geology

1735, in the meaning defined at sense 1a

History and Etymology for geology

New Latin geologia, from ge- + -logia -logy

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Statistics for geology

Last Updated

14 Jan 2019

Look-up Popularity

Time Traveler for geology

The first known use of geology was in 1735

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More Definitions for geology



English Language Learners Definition of geology

: a science that studies rocks, layers of soil, etc., in order to learn about the history of the Earth and its life

: the rocks, land, processes of land formation, etc., of a particular area


ge·​ol·​o·​gy | \ jē-ˈä-lə-jē \

Kids Definition of geology

1 : a science that deals with the history of the earth and its life especially as recorded in rocks
2 : the geologic features (as mountains or plains) of an area

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More from Merriam-Webster on geology

Rhyming Dictionary: Words that rhyme with geology

Spanish Central: Translation of geology

Nglish: Translation of geology for Spanish Speakers

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