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
Paleomagnetic measurements allow to estimate how long magma was actively flowing in a dike.
—
David Bressan, Forbes.com, 31 July 2025
Flowing magma shows vibrant reds and oranges, and contrasts strongly against deep blacks in some shots.
—PC Magazine, 30 July 2025
It was formed from the as magma on Mars slowly cooled, Sotheby's said, and contains materials such as olivine, which is also found in Earth's upper mantle.
—Mary Kekatos, ABC News, 16 July 2025
The ambient rocks are much colder than the hot melt, resulting in fractional crystallization of the source magma.
—Keith Cooper, Space.com, 16 July 2025
See All Example Sentences for magma
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David Bressan, Forbes.com, 31 July 2025
Flowing magma shows vibrant reds and oranges, and contrasts strongly against deep blacks in some shots.
—PC Magazine, 30 July 2025
It was formed from the as magma on Mars slowly cooled, Sotheby's said, and contains materials such as olivine, which is also found in Earth's upper mantle.
—Mary Kekatos, ABC News, 16 July 2025
The ambient rocks are much colder than the hot melt, resulting in fractional crystallization of the source magma.
—Keith Cooper, Space.com, 16 July 2025
See All Example Sentences for magma
Cite this Entry
“Magma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magma. Accessed 10 Aug. 2025.
Copy CitationKids Definition
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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