: 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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From the cliffs of the Jurassic Coast to the basalt columns of the Giant's Causeway and the dreamy Scottish Highlands, there's plenty to explore in the U.K.
South Africa
South Africa offers a truly impressive array of landscapes, with something for everyone.
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Elizabeth Rhodes, Travel + Leisure, 17 May 2024
Another option is to neutralize the acid on site using alkaline minerals such as olivine or basalt.
—IEEE Spectrum, 26 Mar. 2024
See all Example Sentences for basalt 
Elizabeth Rhodes, Travel + Leisure, 17 May 2024
Another option is to neutralize the acid on site using alkaline minerals such as olivine or basalt.
—IEEE Spectrum, 26 Mar. 2024
See all Example Sentences for basalt
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'basalt.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Basalt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basalt. Accessed 29 May. 2024.
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: a dark gray to black usually fine-grained igneous rock
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