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Adjective: igneous  ig-nee-us
  1. Produced under conditions involving intense heat
    "igneous rock is rock formed by solidification from a molten state; especially from molten magma";
    - pyrogenic, pyrogenous
  2. (geology) produced by the action of fire or intense heat
    "rocks formed by igneous agents";
    - eruptive
  3. Like or suggestive of fire
    "an igneous desert atmosphere";
    - fiery

See also: hot

Antonym: aqueous

Encyclopedia: Igneous