pyrogenic

from WordNet (r) 3.0 (2006)

pyrogenic
    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}]

from The Collaborative International Dictionary of English v.0.48

Pyrogenic \Pyr`o*gen"ic\, a. [Pyro- + -gen + -ic.] (Physiol.)
   Producing heat; -- said of substances, as septic poisons,
   which elevate the temperature of the body and cause fever.
   [1913 Webster]