extrusive

Adjective
  1. Of rock material;
    Forced out while molten through cracks in the earth's surface (synset 301358404)
    referred to in: geology - a science that deals with the history of the earth as recorded in rocks
    similar to: volcanic - igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt

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