: a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite
Examples of basalt in a Sentence
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Within the Bion capsule's hull, basalt rocks containing microbial strains were embedded to assess whether bacteria could survive the enormous thermal stress of reentry through the Earth's atmosphere.
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Leonard David, Space.com, 23 Sep. 2025
At $20 to $30 per ton, basalt is low cost and with more than 2 billion people involved in sustenance farming worldwide, according to the Food and Agriculture Organization, the land area where this carbon removal solution could be applied is virtually endless.
—Eduardo Garcia, Forbes.com, 18 Sep. 2025
Some rocks, such as Oman’s ophiolites or Indonesia’s basalts, are far more reactive than others.
—Peter Brannen, Quanta Magazine, 15 Sep. 2025
Sedona’s superstars are its vivid sandstone, limestone, shale and basalt formations, sculpted by millions of years of geologic tumult.
—New York Times, 10 Sep. 2025
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Leonard David, Space.com, 23 Sep. 2025
At $20 to $30 per ton, basalt is low cost and with more than 2 billion people involved in sustenance farming worldwide, according to the Food and Agriculture Organization, the land area where this carbon removal solution could be applied is virtually endless.
—Eduardo Garcia, Forbes.com, 18 Sep. 2025
Some rocks, such as Oman’s ophiolites or Indonesia’s basalts, are far more reactive than others.
—Peter Brannen, Quanta Magazine, 15 Sep. 2025
Sedona’s superstars are its vivid sandstone, limestone, shale and basalt formations, sculpted by millions of years of geologic tumult.
—New York Times, 10 Sep. 2025
See All Example Sentences for basalt
Cite this Entry
“Basalt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basalt. Accessed 30 Sep. 2025.
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: a dark gray to black usually fine-grained igneous rock
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