extrusive Hear it!

extrusive definition

ex·tru·sive (ek stro̵̅o̅′siv)

adjective

  1. extruding or tending to extrude
  2. Geol. designating or of igneous rock formed from lava that hardened on the surface of the earth, moon, etc.

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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