basalt

noun

: a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite
basaltic adjective

Examples of basalt in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The brow of the mountain represents Budj Bim’s forehead, the sharp basalt scoria rocks are the giant’s teeth, and the lava flows are his blood, which poured over the land. Literary Hub, 22 Oct. 2025 There, McIlroy was seen posing for photos with several of his trophies arranged on the basalt rocks, paying tribute to a season that many consider his most meaningful of all time. Devlina Sarkar, MSNBC Newsweek, 22 Oct. 2025 The stones appear to be carved into volcanic stone, assumed basalt, but analysis of the rock was not performed for the study, researchers said. Irene Wright, Miami Herald, 20 Oct. 2025 Built with a full wood core for stability and responsiveness with fiberglass and basalt laminates for a predictable flex, this ski balances strength with just enough softness to feel forgiving underfoot. Marina Knight, Outside, 17 Oct. 2025 See All Example Sentences for basalt

Word History

Etymology

Latin basaltes, manuscript variant of basanites touchstone, from Greek basanitēs (lithos), from basanos touchstone, from Egyptian bḫnw

First Known Use

1601, in the meaning defined above

Time Traveler
The first known use of basalt was in 1601

Browse Nearby Words

Cite this Entry

“Basalt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basalt. Accessed 29 Oct. 2025.

Kids Definition

basalt

noun
: a dark gray to black usually fine-grained igneous rock
basaltic adjective

More from Merriam-Webster on basalt

Last Updated: - Updated example sentences
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