[syn: igneous, pyrogenic, pyrogenous]
The Collaborative International Dictionary of English v.0.48:
Pyrogenous \Py*rog"e*nous\, a. [Gr. ? fire + genous: cf. F.
   purog[`e]ne, Gr. ?.]
   Produced by fire; igneous. --Mantell. .
   [1913 Webster]
WordNet (r) 3.0 (2006):
pyrogenous
    adj 1: produced by or producing fever [syn: pyrogenic,
           pyrogenous, pyrogenetic]
    2: 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" [syn: igneous, pyrogenic,
       pyrogenous]