Definition of magma in English:

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magma

Pronunciation: /ˈmaɡmə/

noun

Hot fluid or semifluid material below or within the earth’s crust from which lava and other igneous rock is formed by cooling.
Example sentences
  • Massive sulfide deposits may also form in other settings where water circulates in rocks near cooling magma.
  • What they do know is that a ‘slow rise’ of magma is driving lava to the surface, which has created a new lava dome in the mountain's crater.
  • Melts form at the highest temperatures and lowest pressures resulting in large volumes of tholeiitic magma that form shield volcanoes such as Mauna Loa.

Derivatives

magmatic

Pronunciation: /maɡˈmadik/
adjective
Example sentences
  • In central and northern Sardinia there is evidence of an Ordovician magmatic belt upon older basement interpreted as an Andean-type volcanic arc.
  • Thin-section analysis shows that the minerals forming the magmatic foliation do not show any signs of deformation or recrystallization.
  • Rifting was associated with magmatic activity.

Origin

Late Middle English (in the sense 'residue of dregs after evaporation or pressing of a semiliquid substance'): via Latin from Greek magma (from massein 'knead').

For editors and proofreaders

Syllabification: mag·ma

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