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
Examples of magma in a Sentence
Recent Examples on the Web
Axial behaves like a balloon, inflating as magma accumulates beneath the surface.
—
Dan Perry, Newsweek, 3 Jan. 2025
In a volcanically active area, there’s a greater proportion of magma to earth.
—Elizabeth Weise, USA TODAY, 1 Jan. 2025
The new data suggests that Io’s numerous volcanoes are each likely powered by their own chamber of hot magma, rather than being fed by a global ocean of magma beneath the surface.
—Ashley Strickland, CNN, 13 Dec. 2024
This complex is highly mobile in the molten sections of the mantle—the part that geologists call magma.
—David Bressan, Forbes, 25 Dec. 2024
See all Example Sentences for magma 
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Dan Perry, Newsweek, 3 Jan. 2025
In a volcanically active area, there’s a greater proportion of magma to earth.
—Elizabeth Weise, USA TODAY, 1 Jan. 2025
The new data suggests that Io’s numerous volcanoes are each likely powered by their own chamber of hot magma, rather than being fed by a global ocean of magma beneath the surface.
—Ashley Strickland, CNN, 13 Dec. 2024
This complex is highly mobile in the molten sections of the mantle—the part that geologists call magma.
—David Bressan, Forbes, 25 Dec. 2024
See all Example Sentences for magma
Dictionary Entries Near magma
Cite this Entry
“Magma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magma. Accessed 18 Jan. 2025.
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Medical Definition
magma
noun
mag·ma
ˈmag-mə 
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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