Source : Webster's Revised Unabridged Dictionary (1913)

Pyrolatry \Py*rol"a*try\, n. [Pyro- + Gr. ? worship: cf. F.
   pyrol[^a]trie.]
   The worship of fire. --Young.

Source : WordNet®

pyrolatry
     n : worship of fire [syn: {fire-worship}]