basalt

noun
ba·​salt | \ bə-ˈsȯlt, ˈbā-ˌsȯlt \

Definition of basalt

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

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Other Words from basalt

basaltic \ bə-​ˈsȯl-​tik \ adjective

Examples of basalt in a Sentence

Recent Examples on the Web

In Iceland, Climeworks is turning its captured carbon dioxide into basalt rock, while in Switzerland the gas is used as a fertilizer in a greenhouse, and in Italy, the company is using the carbon dioxide to make methane fuel for trucks. Umair Irfan, Vox, "Sucking CO2 out of the atmosphere, explained," 24 Oct. 2018 But crushed basalt could do the same pH-adjusting job while providing a variety of additional benefits. Scott K. Johnson, Ars Technica, "Crush the right rock and spread it on farms to help soil and the climate," 22 Feb. 2018 Elegant teak and basalt accents echo the ancient temples nearby. Town & Country, "These Are the 83 Top Hotels Around the World," 6 Oct. 2016 Countertops, honed basalt stone in Pan Black—Milestone (T); milestonenm.com. House Beautiful, "September 2011 Issue Product Guide," 29 June 2011 With tons of basalt rock around, the chemistry of the water would have reflected that rock—high in iron, magnesium, and silica. Scott K. Johnson, Ars Technica, "The secret to Mars’ past warmth could be beneath Curiosity’s wheels," 9 Aug. 2018 Being submerged for all those years seemed to have taken its toll, despite its being constructed out of more than 6,000 tons of mud, basalt rocks, and salt crystals. Anne Slowey, Condé Nast Traveler, "Fear and Self-Loathing in the American Southwest," 25 July 2018 Their idea was that water in the lake could have met with groundwater coming through the basalt. Scott K. Johnson, Ars Technica, "The secret to Mars’ past warmth could be beneath Curiosity’s wheels," 9 Aug. 2018 In the living room, the vintage chair is by Illum Wikkelsø, and the mantel and stone benches are both of local basalt. Gisela Williams, ELLE Decor, "A Portuguese Family Manor is Transformed Into a Heritage-Rich Island Getaway," 17 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'basalt.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of basalt

1601, in the meaning defined above

History and Etymology for basalt

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

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Statistics for basalt

Last Updated

22 Jan 2019

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Time Traveler for basalt

The first known use of basalt was in 1601

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More Definitions for basalt

basalt

noun

English Language Learners Definition of basalt

: a type of dark gray to black rock

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More from Merriam-Webster on basalt

Rhyming Dictionary: Words that rhyme with basalt

Spanish Central: Translation of basalt

Nglish: Translation of basalt for Spanish Speakers

Britannica.com: Encyclopedia article about basalt

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