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.

extrusive Usage Examples

Modifies a noun

rock: The rocks that form from extruded magma are called extrusive igneous rocks.