Extrusive

adj, noun

Definitions

Adjective
  1. 1
    Jutting out; extruding.
  2. 2
    Of rocks: forced, while in a plastic or molten state, on to the Earth's surface to lie atop existing rocks.
Adjective
  1. 1
    of rock material; forced out while molten through cracks in the earth's surface wordnet
Noun
  1. 1
    Rock which has been formed through volcanic extrusion.

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