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 reports show that China’s potential in gold geology is higher than older Western models assumed.
—
Christopher McFadden, Interesting Engineering, 15 Nov. 2025
My household has had good fortune with the National Geographic geology labs that are commonplace in big-box stores, including the build-your-own-volcano set ($15) and the crystal-growing gear, like this glow-in-the-dark number ($37).
—Jessica Winter, New Yorker, 15 Nov. 2025
Interpretive signs provide insight into the geology and history of the falls, enriching the experience with educational tidbits about the area.
—Taryn White, Travel + Leisure, 15 Nov. 2025
That’s thanks to a quirk of South Florida’s geology, where the entire region is perched on holey rock that does little to stop the rise of groundwater, which Sukop’s research has shown is rising on pace with sea level.
—Susan Merriam, Miami Herald, 12 Nov. 2025
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Christopher McFadden, Interesting Engineering, 15 Nov. 2025
My household has had good fortune with the National Geographic geology labs that are commonplace in big-box stores, including the build-your-own-volcano set ($15) and the crystal-growing gear, like this glow-in-the-dark number ($37).
—Jessica Winter, New Yorker, 15 Nov. 2025
Interpretive signs provide insight into the geology and history of the falls, enriching the experience with educational tidbits about the area.
—Taryn White, Travel + Leisure, 15 Nov. 2025
That’s thanks to a quirk of South Florida’s geology, where the entire region is perched on holey rock that does little to stop the rise of groundwater, which Sukop’s research has shown is rising on pace with sea level.
—Susan Merriam, Miami Herald, 12 Nov. 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 19 Nov. 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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