intrusive Hear it!

intrusive definition

in·tru·sive (-siv)

adjective

  1. intruding or tending to intrude
  2. Geol. designating or of igneous rock formed from magma that hardened while still within the earth, moon, etc.
  3. Phonet. present or added in speech although not represented originally in spelling or accounted for otherwise etymologically (Ex.: the d added to OE spinel to form spindle)

Etymology: < L intrusus, pp. of intrudere (see intrude) + -ive

Related Forms:

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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