igneous Hear it!

igneous definition

ig·ne·ous (ig′nē əs)

adjective

  1. of, containing, or having the nature of, fire; fiery
  2. produced by the action of fire; specif., formed by volcanic action or intense heat, as intrusive or extrusive rock solidified from molten magma or lava

Etymology: L igneus < ignis, a fire < IE base *egnis > Sans agníḥ, fire, Lith ugnìs

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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