noun
magma
Geological term for molten rock beneath the Earth's surface. Compare マグマ, the more common loanword.
See also: マグマ
火山の噴火で岩漿が地表に流れ出た。
Magma flowed out onto the surface during the volcanic eruption.
岩漿が冷えて固まると火成岩になる。
When magma cools and solidifies, it becomes igneous rock.