igneous

adjective

1. 1

   like or suggestive of fire

   a fiery desert wind

   an igneous desert atmosphere

2. 2

   produced by the action of fire or intense heat

   rocks formed by igneous agents

3. 3

   produced under conditions involving intense heat

   igneous rock is rock formed by solidification from a molten state; especially from molten magma

   igneous fusion is fusion by heat alone