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
He’s known for building intentional cracks and erosions into his works, which often reveal an interior geology of materials like crystals or gears, and more recently, labyrinth staircases populated with small figures, not unlike a surreal antique dollhouse.
—
Kristen Tauer, Footwear News, 11 Mar. 2026
The Earth Science Club promotes interests in geology, paleontology, mineralogy and archaeology.
—Michelle Mullins, Chicago Tribune, 10 Mar. 2026
Huang and his co-authors are especially eager for higher-resolution images of the region to better characterize its geology and gauge how well astronauts could navigate its terrain—something that could come from a new moon-mapping satellite that China announced last year.
—Lee Billings, Scientific American, 10 Mar. 2026
The unique geology of Mexico's Yucatán has left the jungles surrounding Tulum studded with cenotes, sinkholes filled with spectacularly still, crystalline waters.
—Carley Rojas Avila, Travel + Leisure, 10 Mar. 2026
See All Example Sentences for geology
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Kristen Tauer, Footwear News, 11 Mar. 2026
The Earth Science Club promotes interests in geology, paleontology, mineralogy and archaeology.
—Michelle Mullins, Chicago Tribune, 10 Mar. 2026
Huang and his co-authors are especially eager for higher-resolution images of the region to better characterize its geology and gauge how well astronauts could navigate its terrain—something that could come from a new moon-mapping satellite that China announced last year.
—Lee Billings, Scientific American, 10 Mar. 2026
The unique geology of Mexico's Yucatán has left the jungles surrounding Tulum studded with cenotes, sinkholes filled with spectacularly still, crystalline waters.
—Carley Rojas Avila, Travel + Leisure, 10 Mar. 2026
See All Example Sentences for geology
Cite this Entry
“Geology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geology. Accessed 14 Mar. 2026.
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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