geology
noun
ge·ol·o·gy
jē-ˈä-lə-jē 
plural geologies
1
a
: 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
Examples of geology in a Sentence
learning about the geology of Hawaii
Recent Examples on the Web
The geology of Wyoming’s Powder River Basin is rich with fossil fuels.
—
Christopher Helman, Forbes.com, 15 July 2025
Other Caltech professors on the Mariner Mars team were Robert Sharp and Gerry Neugebauer, professors of geology, and Robert Leighton and Victor Neher, both professors of physics.
—Rod Pyle, Space.com, 14 July 2025
Drive time: 45 minutes Towering rock formations and unique geology make this one of the most scenic state parks along the Front Range.
—Jennifer Broome, Denver Post, 14 July 2025
Scientists collect core samples—long cylinders of sediment, rock or ice—to gather data on an environment or Earth’s geology over time.
—Sarah Kuta, Smithsonian Magazine, 10 July 2025
See All Example Sentences for geology
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Christopher Helman, Forbes.com, 15 July 2025
Other Caltech professors on the Mariner Mars team were Robert Sharp and Gerry Neugebauer, professors of geology, and Robert Leighton and Victor Neher, both professors of physics.
—Rod Pyle, Space.com, 14 July 2025
Drive time: 45 minutes Towering rock formations and unique geology make this one of the most scenic state parks along the Front Range.
—Jennifer Broome, Denver Post, 14 July 2025
Scientists collect core samples—long cylinders of sediment, rock or ice—to gather data on an environment or Earth’s geology over time.
—Sarah Kuta, Smithsonian Magazine, 10 July 2025
See All Example Sentences for geology
Cite this Entry
“Geology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geology. Accessed 4 Aug. 2025.
Copy CitationKids Definition
geology
noun
ge·ol·o·gy
jē-ˈäl-ə-jē
plural geologies
1
a
: a science that deals with the history of the earth and its life especially as recorded in rocks
b
: a study of the features of a heavenly body (as the moon)
2
: the geologic features (as mountains or plains) of an area
geologic
adjective
ˌjē-ə-ˈläj-ik
or geological
-i-kəl
geologically
adverb
-i-k(ə-)lē
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