English Dictionary

igneous rock

名詞

(geology) one of the major groups of rock that makes up the crust of the Earth; formed by the cooling of molten rock, either below the surface (intrusive) or on the surface (extrusive)

日本語の意味

火成岩：地球の地殻を構成する主要な岩石群の一つで、溶けた岩石（溶岩）が地中や地表で冷却・固化して形成された岩石

The coastal cliffs are primarily composed of ancient igneous rock that resists erosion.

海岸の崖は、主に侵食に強い古い火成岩で構成されています。

意味（1）

(geology) one of the major groups of rock that makes up the crust of the Earth; formed by the cooling of molten rock, either below the surface (intrusive) or on the surface (extrusive)

igneous rocks （ plural ）