マグマ

まぐま
noun
magma; molten rock beneath the earth's surface
1. magma; molten rock beneath the earth's surface
Extremely hot molten rock found deep beneath the earth's surface, particularly under volcanoes. When it reaches the surface during an eruption, it is called 溶岩 (lava).
マグマが地表(ちひょう)()ると溶岩(ようがん)になる。
When magma reaches the surface, it becomes lava.
火山(かざん)地下(ちか)にはマグマが()まっている。
Magma has accumulated beneath the volcano.
マグマの温度(おんど)千度(せんど)()えることもあり、地殻(ちかく)変動(へんどう)(おお)きな影響(えいきょう)(あた)える。
The temperature of magma can exceed 1,000 degrees and has a major impact on crustal movement.

A loanword from English (ultimately from Latin/Greek). Refers to molten rock found beneath the earth's surface. When magma erupts and flows on the surface, it is called 溶岩(ようがん) (lava). An essential term for understanding volcanoes, which are a major part of Japan's geography and natural disaster awareness.

COMMON COLLOCATIONS:

  • マグマが上昇(じょうしょう)する: magma rises
  • マグマが噴出(ふんしゅつ)する: magma erupts
  • マグマ()まり: magma chamber
  • マグマの活動(かつどう): magmatic activity

RELATED TERMS:

  • 溶岩(ようがん) — lava (magma after it reaches the surface)
  • 火山(かざん) — volcano
  • 噴火(ふんか) — volcanic eruption
  • {マントル} — mantle (the layer below the crust)