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

Khazzan’s geology isn’t easy to drill, and Oman initially lacked infrastructure, expertise and drilling data. Sarah Kent, WSJ, "Oil Industry Tries to Take the Fracking Boom Global," 19 June 2018 The geology of the sea floor in the western Pacific is also conducive to the production of whale food. Ryan P. Smith, Smithsonian, "What the Longest Known Whale Shark Migration Ever Tells Us About Conservation," 8 May 2018 But the company says Florida's unique underground geology, and the state's business-friendly environmental regulations, ended up being the perfect mix for its plunge into the U.S. market. Alan Gomez, USA TODAY, "Salmon from sunny South Florida? Norwegian firm builds Florida farm for cold-water fish," 11 Apr. 2018 The association bought the North Side cave in 1995 in order to protect and preserve its biology, geology and history. Kelsey Bradshaw, San Antonio Express-News, "Lee student freed from Robber Baron Cave after 11-hour rescue," 9 Mar. 2018 University of Hawaii geology professor Michael Garcia shows a piece of olivine embedded in a chunk of lava from a prehistoric eruption of Kilauea volcano in his office in Honolulu on Tuesday, June 19, 2018. Washington Post, "NOT REAL NEWS: Erupting Hawaii volcano not raining gemstones," 19 June 2018 Now that the drillers have mastered its geology, the basin’s production has begun to explode. Jeffrey Ball, Fortune, "Photographing The Permian Basin," 25 May 2018 Chapman and Morrison gathered together experts in astronomy, physics and geology to study the problem. Nina Burleigh, Newsweek, "We Can Save Ourselves From Earth-Killing Asteroids, But Someone Has to Pay," 11 June 2015 All land-measurement operation would fall under the Coast and Interior Survey, while all investigations of geology and natural resources, together with land classification, should fall under a new consolidated geological survey. 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 '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

21 Oct 2018

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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

See words that rhyme with geology

Spanish Central: Translation of geology

Nglish: Translation of geology for Spanish Speakers

Comments on geology

What made you want to look up geology? Please tell us where you read or heard it (including the quote, if possible).


exaggeratedly or childishly emotional

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