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View synonyms for extrusive

extrusive

[ ik-stroo-siv, -ziv ]

adjective

  1. tending to extrude.
  2. pertaining to extrusion.
  3. Also 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.

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Other Words From

  • nonex·trusive adjective

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Word History and Origins

Origin of extrusive1

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

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Example Sentences

Deposits formed at shallow depths are related to extrusive rocks and to intrusives near the surface.

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extrusion pressexuberance

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