igneous, pyrogenic, pyrogenous -- (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 strata")
igneous, eruptive -- (produced by the action of fire or intense heat; "rocks formed by igneous agents")
fiery, igneous -- (like or suggestive of fire; "a fiery desert wind"; "an igneous desert atmosphere")
(Sound)
