1. 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"
   - pyrogenic, pyrogenous 
2. 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: heat, hot

Antonym: aqueous

Encyclopedia: Igneous

• toothed wheel
• toothless
• toothlike
• toothpaste
• toothpick
• toothpowder
• toothsome
• toothsomeness
• toothwort
• toothy
• tootle
• tootsie
• tootsy
• toowomba canary grass
• top
• top banana
• top billing
• top boot
• top brass
• top dog
• top dollar
• top dressing
• top executive
• top fermentation
• top fermenting yeast