basalt

noun
ba·​salt | \ bə-ˈsȯlt How to pronounce basalt (audio) , ˈbā-ˌsȯlt How to pronounce basalt (audio) \

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 How to pronounce basaltic (audio) \ adjective

Examples of basalt in a Sentence

Recent Examples on the Web The basalt rock was the result of an eruption from a volcano 8.7 miles away. Fox News, "Ancient 'volcano map' discovered carved into large volcanic rock," 17 June 2020 The windblown loess soil comprises freshwater sedimentary topsoil resting over fractured basalt subsoil. Michael Alberty | For The Oregonian/oregonlive, oregonlive, "Willamette Valley wine map gets 2 new grape-growing regions: Tualatin Hills, Laurelwood District," 4 June 2020 Look for a smooth, oval-shaped stone with fine pores, such as the quartzite or dark basalt cobbles found along most riverbeds. Keith Mccafferty, Field & Stream, "How to Make Primitive Survival Weapons in the Bush," 24 Apr. 2020 And 600 kilometers to the east, there are more recent basalt seamounts at the bottom of the ocean. Scott K. Johnson, Ars Technica, "Volcanoes where they shouldn’t be? Maybe it’s a mantle sponge," 28 Feb. 2020 Grapes grown in the six square miles known as The Rocks District of Milton-Freewater absorb the minerals from the distinctive basalt cobblestones, resulting in savory, earthy wines that have been compared to those of France's northern Rhone Valley. Sally Carpenter Hale, chicagotribune.com, "Like wine from France’s Rhone Valley? Head to Walla Walla," 13 Sep. 2019 Grapes grown in the six square miles known as The Rocks District of Milton-Freewater absorb the minerals from the distinctive basalt cobblestones, resulting in savory, earthy wines that have been compared to those of France’s northern Rhone Valley. Washington Post, "Like wine from France’s Rhone Valley? Head to Walla Walla," 10 Sep. 2019 Alternatively, batter a coarse piece of granite or basalt into rough shape by pounding it with other stones and then grind and sand it against smooth stones to produce an edge. Keith Mccafferty, Field & Stream, "How to Make Primitive Survival Weapons in the Bush," 24 Apr. 2020 The Mornington Peninsula tour, now online, features the region’s stunning coastline and rugged basalt formations — source material for Melbourne’s famous bluestone lanes and buildings. Keira Alexander, Travel + Leisure, "Take a Virtual Trip to Victoria, Australia and Explore Its Stunning Landscapes, Fascinating Museums, and Adorable Wildlife," 13 Apr. 2020

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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Time Traveler for basalt

Time Traveler

The first known use of basalt was in 1601

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Statistics for basalt

Last Updated

30 Jun 2020

Cite this Entry

“Basalt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basalt. Accessed 9 Jul. 2020.

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More Definitions for basalt

basalt

noun
How to pronounce basalt (audio) How to pronounce basalt (audio)

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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