magma

noun
mag·ma | \ˈmag-mə \

Definition of magma 

1 archaic : dregs, sediment

2 : a thin pasty suspension (as of a precipitate in water)

3 : molten rock material within the earth from which igneous rock results by cooling

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Other Words from magma

magmatic \mag-ˈma-tik \ adjective

Examples of magma in a Sentence

Recent Examples on the Web

The collapse caused magma to push more than 10 miles (16 kilometers) downslope toward the populated southeast coastline of the island. Caleb Jones, Fox News, "Hawaii volcano shoots lava into sky; evacuations ordered," 5 May 2018 The collapse caused magma to push more than 10 miles downslope toward the populated southeast coastline of the island. Jane Onyanga-omara, USA TODAY, "Hundreds flee as eruption of Hawaii's Kilauea volcano sends lava into streets," 4 May 2018 The magma under the surface in this area is hotter, more fluid and less crystallized. USA TODAY, "Lava from Kilauea volcano is now hotter, more fluid," 18 June 2018 The fresher, hotter magma will allow faster lava flows that can potentially cover more area, said Janet Babb, a geologist with the Hawaiian Volcano Observatory. CBS News, "At least 4 residents airlifted after fast-moving lava crosses Hawaii road," 19 May 2018 The fresher, hotter magma will allow faster lava flows that can potentially cover more area, said Janet Babb, a geologist with the Hawaiian Volcano Observatory. Fox News, "Hawaii officials warn residents about latest lava flow," 19 May 2018 In general, an eruption occurs when the pressure of magma, underground molten rock, exceeds that of the rocks on top holding it in place, though earthquakes can also trigger eruptions. Umair Irfan, Vox, "Volcanoes are awe-inspiring. Here are 7 things to know about them.," 11 May 2018 Its water is evenly heated by magma rising from the Earth’s mantle, leading to its regularity. Jason Daley, Smithsonian, "Yellowstone’s Biggest Geyser, Steamboat, Has Trio of Eruptions," 2 May 2018 These extreme vibrations may have forced more magma than usual out of the cracks in the seafloor. Sophie Weiner, Popular Mechanics, "Dinosaur-Killing Asteroid May Have Also Triggered Undersea Volcano Eruptions," 9 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magma.' 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 magma

15th century, in the meaning defined at sense 1

History and Etymology for magma

Middle English, from Latin magmat-, magma, from Greek, thick unguent, from massein to knead — more at mingle

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Statistics for magma

Last Updated

16 Oct 2018

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Time Traveler for magma

The first known use of magma was in the 15th century

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More Definitions for magma

magma

noun

English Language Learners Definition of magma

: hot liquid rock below the surface of the Earth

magma

noun
mag·ma | \ˈmag-mə \

Kids Definition of magma

: molten rock within the earth

magma

noun
mag·ma | \ˈmag-mə \

Medical Definition of magma 

1 : a crude mixture of mineral or organic matter in the state of a thin paste

2 : a suspension of a large amount of precipitated material (as in milk of magnesia) in a small volume of a watery vehicle

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More from Merriam-Webster on magma

Spanish Central: Translation of magma

Nglish: Translation of magma for Spanish Speakers

Britannica.com: Encyclopedia article about magma

Comments on magma

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