igneous Hear it!

igneous definition

ig·ne·ous (ignē 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

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