Source : Webster's Revised Unabridged Dictionary (1913)

Pyrotechny \Pyr`o*tech`ny\, n. [Cf. F. pyrotechnie.]
   1. The use and application of fire in science and the arts.
      [Obs.] --Sir M. Hale.

   2. Same as {Pyrotechnics}.

Source : WordNet®

pyrotechny
     n : the craft of making fireworks [syn: {pyrotechnics}]