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from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Intruding or tending to intrude.
  • adj. Geology Of or relating to igneous rock that is forced while molten into cracks or between other layers of rock.
  • adj. Linguistics Epenthetic.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Tending or apt to intrude; doing that which is not welcome; interrupting or disturbing; entering without right or welcome.
  • adj. Of rocks: forced, while in a plastic or molten state, into the cavities or between the cracks or layers of other rocks.
  • n. An igneous rock that is forced, while molten, into cracks or between other layers of rock

from the GNU version of the Collaborative International Dictionary of English

  • adj. Apt to intrude; characterized by intrusion; entering without right or welcome.

from The Century Dictionary and Cyclopedia

  • Apt to intrude; coming unbidden or without welcome; appearing undesirably: as, intrusive thoughts or guests.
  • Done or effected by intrusion; carried out by irregular or unauthorized entrance: as, intrusive interference.
  • Thrust in out of regular place or order; introduced from an extraneous source; due to intrusion or irregular entrance.
  • Specifically, in geology applied to those igneous masses which have forced their way between older rocks and have never reached the surface: contrasted with extrusive. See intrusive rocks, under intrusive.
  • n. In geology, a mass of igneous rock which has forced its way between older walls or strata, but has never reached the surface of the earth. Intrusives occur as batholiths, laccoliths, intruded sheets, and dikes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. tending to intrude (especially upon privacy)
  • adj. of rock material; forced while molten into cracks between layers of other rock
  • adj. thrusting inward


Sorry, no etymologies found.


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