Definition of magma in English:

magma

Syllabification: mag·ma
Pronunciation: /ˈmagmə
 
/

noun

  • Hot fluid or semifluid material below or within the earth’s crust from which lava and other igneous rock is formed by cooling.
    More 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: /magˈmatik/
adjective
More 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').

More definitions of magma

Definition of magma in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea