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extrusive
extrusive definition
ex·tru·sive (ek stro̵̅o̅′siv)
adjective
- extruding or tending to extrude
- 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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