breccia
noun
brec·cia
ˈbre-ch(ē-)ə 
: a rock composed of sharp fragments embedded in a fine-grained matrix (such as sand or clay)
Examples of breccia in a Sentence
Recent Examples on the Web
The specific egg sample used for dating came from a cluster of 28 eggs found within breccia-bearing siltstone.
—
Mrigakshi Dixit, Interesting Engineering, 11 Sep. 2025
The exploratory holes drilled into the breccia pipe to locate uranium could exacerbate that problem, some fear.
—science.org, 15 Aug. 2024
Previous research explained the chaotic rock formations found in the over 3.3-billion-old Greenstone Belt as breccia formed during large meteorite impacts, but according to the new study, the extent and frequency of such deposits would suggest an unrealistic high impact rate on early Earth.
—David Bressan, Forbes, 30 Mar. 2024
The region has some of the nation’s highest-grade uranium ore in subterranean geologic formations known as breccia pipes, according to the U.S. Geological Survey.
—The Arizona Republic, 10 Jan. 2024
See All Example Sentences for breccia
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Mrigakshi Dixit, Interesting Engineering, 11 Sep. 2025
The exploratory holes drilled into the breccia pipe to locate uranium could exacerbate that problem, some fear.
—science.org, 15 Aug. 2024
Previous research explained the chaotic rock formations found in the over 3.3-billion-old Greenstone Belt as breccia formed during large meteorite impacts, but according to the new study, the extent and frequency of such deposits would suggest an unrealistic high impact rate on early Earth.
—David Bressan, Forbes, 30 Mar. 2024
The region has some of the nation’s highest-grade uranium ore in subterranean geologic formations known as breccia pipes, according to the U.S. Geological Survey.
—The Arizona Republic, 10 Jan. 2024
See All Example Sentences for breccia
Cite this Entry
“Breccia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/breccia. Accessed 22 Sep. 2025.
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breccia
noun
brec·cia
ˈbrech-(ē-)ə
: a rock composed of sharp pieces surrounded by a fine-grained material
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