extrusive

[ ik-stroo-siv, -ziv ]
See synonyms for extrusive on Thesaurus.com
adjective
  1. tending to extrude.

  2. pertaining to extrusion.

  1. Also effusive. Geology. noting or pertaining to a class of igneous rocks that have been forced out in a molten or plastic condition upon the surface of the earth.

Origin of extrusive

1
First recorded in 1810–20; extrus(ion) + -ive

Other words from extrusive

  • non·ex·tru·sive, adjective

Words Nearby extrusive

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How to use extrusive in a sentence

British Dictionary definitions for extrusive

extrusive

/ (ɪkˈstruːsɪv) /


adjective
  1. tending to extrude

  2. (of igneous rocks) formed from magma issuing from volcanoes or cracks in the earth's crust; volcanic: Compare intrusive (def. 2)

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