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The Collaborative International Dictionary
Pyrogenous

Pyrogenous \Py*rog"e*nous\, a. [Gr. ? fire + genous: cf. F. purog[`e]ne, Gr. ?.] Produced by fire; igneous.
--Mantell. .

Wiktionary
pyrogenous

a. 1 produced by fire or heat 2 producing fire, heat, or fever

WordNet
pyrogenous
  1. adj. produced by or producing fever [syn: pyrogenic, 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]