igneous rock

English

Noun

igneous rock (countable and uncountable, plural igneous rocks)

  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).
    Hypernyms: rock, stone < material
    Coordinate terms: metamorphic rock, sedimentary rock

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