Definitions

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

  • adj. Tending to push or thrust out.
  • adj. Tending to protrude or project.
  • adj. Derived from magma poured out or ejected at the earth's surface. Used of igneous rocks.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Jutting out; extruding.
  • n. Rock which has been formed through volcanic extrusion.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Forced out at the surface; ; -- contrasted with intrusive.

from The Century Dictionary and Cyclopedia

  • Capable of being extruded or thrust out; that tends or serves to extrude or thrust out or forth; specifically, in petrography, erupted or extruded: applied to igneous rocks. Same as effusive.
  • n. That which is extruded; specifically, in petrography, same as effusive (which see): contrasted with intrusive.

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

  • adj. of rock material; forced out while molten through cracks in the earth's surface

Etymologies

Sorry, no etymologies found.

Examples

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.