Geology. molten material beneath or within the earth's crust, from which igneous rock is formed.
any crude mixture of finely divided mineral or organic matter.
Chemistry, Pharmacology. a paste composed of solid and liquid matter.
- mag·mat·ic [mag-mat-ik], /mægˈmæt ɪk/, adjective
- mag·ma·tism, noun
- lava, magma
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use magma in a sentence
Both are clues that the volcanoes are connected by one big caldera, a massive crater that forms when a very large magma chamber in a volcano explodes and empties.An enormous supervolcano may be hiding under Alaskan islands | Beth Geiger | December 7, 2020 | Science News
This internal melting created magma which, through a plumbing system, was thrust out as lava onto the crust.After 1.5 Billion Years in Flux, Here’s How a New, Stronger Crust Set the Stage for Life on Earth | Fabio A Capitanio | December 3, 2020 | Singularity Hub
Those elements were some of the last to crystalize out of the magma ocean that covered the young moon and can help reveal details of how that process happened.China is about to collect the first moon rocks since the 1970s | Lisa Grossman | December 1, 2020 | Science News
At her experimental petrology lab at Jacobs-NASA Johnson Space Center, she subjects these samples to extreme pressure and temperature in “mini magma chambers” to recreate the conditions under which they formed.
They argue some local source of geothermal heat is needed, such as a magma chamber beneath the surface, to maintain a lake.A ‘lake’ on Mars may be surrounded by more pools of water | Christopher Crockett | September 28, 2020 | Science News
Underneath our feet tectonic plates shift, magma bubbles, water boils, and both regularly erupt.
When the volcano blew its top, thousands perished, immolated by fire, boiling magma, and ash.
Iron-heavy minerals are believed to have sunk through the magma before floating to the surface in a new form of mountain.Space Bling: From Diamond Planets to Crystal Oceans to Precious Moon Jewels | Alexa Valiente, Jaewon Kang | October 13, 2012 | THE DAILY BEAST
Like magma seeping up through geological faults, this emotion can explode in unexpected ways.Why We Riot: How Fans Turned an Egypt Soccer Match Into a Bloodbath | Jeff Wise | February 3, 2012 | THE DAILY BEAST
The magma drove upward, melting its way through the fractured rock of the channels under the western side of the island.The Flaming Mountain | Harold Leland Goodwin
Scientists had arrived, too, and they were taking over much of the detail of keeping track of the magma.The Flaming Mountain | Harold Leland Goodwin
When the shockwaves get down far enough to crack things open, the gas'll come up, and then steam and ash, and then the magma.Uller Uprising | Henry Beam Piper, John D. Clark and John F. Carr
An average sugar centrifugal will separate 600 pounds of magma perfectly in three minutes.
Next morning the drained magma is put into a strong bag, and squeezed in a press.A Dictionary of Arts, Manufactures and Mines | Andrew Ure
British Dictionary definitions for magma
a paste or suspension consisting of a finely divided solid dispersed in a liquid
hot molten rock, usually formed in the earth's upper mantle, some of which finds its way into the crust and onto the earth's surface, where it solidifies to form igneous rock
- magmatic (mæɡˈmætɪk), adjective
- magmatism, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for magma
The molten rock material that originates under the Earth's crust and forms igneous rock when it has cooled. When magma cools and solidifies beneath the Earth's surface, it forms what are known as intrusive rocks. When it reaches the Earth's surface, it flows out as lava and forms extrusive (or volcanic) rocks.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for magma
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.