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
While the East Coast is already seeing the effects of beach erosion and rising sea levels, the Pacific Northwest (PNW) has been protected by its geology—so far.
—
Stephanie Pappas, Scientific American, 30 Apr. 2025
An answer to these questions could provide more clarity about the origin of the moon and its early evolution — including how massive impactors like the one that formed the SPA basin affected its geology.
—Joshua Rapp Learn, Discover Magazine, 29 Apr. 2025
In October 2024, NASA launched Europa Clipper, which will determine the thickness of this outer icy layer and characterize the Galilean moon's overall geology.
—Darryl Seligman, Space.com, 29 Apr. 2025
Melting Magma Heat drives geology, the rocky foundation upon which everything else, from volcanic activity and atmospheric chemistry to biology, is built.
—Robin George Andrews, Quanta Magazine, 25 Apr. 2025
See All Example Sentences for geology
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Stephanie Pappas, Scientific American, 30 Apr. 2025
An answer to these questions could provide more clarity about the origin of the moon and its early evolution — including how massive impactors like the one that formed the SPA basin affected its geology.
—Joshua Rapp Learn, Discover Magazine, 29 Apr. 2025
In October 2024, NASA launched Europa Clipper, which will determine the thickness of this outer icy layer and characterize the Galilean moon's overall geology.
—Darryl Seligman, Space.com, 29 Apr. 2025
Melting Magma Heat drives geology, the rocky foundation upon which everything else, from volcanic activity and atmospheric chemistry to biology, is built.
—Robin George Andrews, Quanta Magazine, 25 Apr. 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 15 May. 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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