lava

Noun
  1. Rock that in its molten form (as magma) issues from volcanos;
    Lava is what magma is called when it reaches the surface (synset 114955127)
    is a type of: volcanic rock - extrusive igneous rock solidified near or on the surface of the Earth
    subtypes:
    • aa - a dry form of lava resembling clinkers
    • pahoehoe - freely flowing lava
    • pillow lava - lava that hardened in rounded shapes suggestive of pillows; believed to result from underwater eruptions

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