{ Pyr′o‐tech″nic (?), Pyr′o‐tech″nic‐al (?), } a. [Pyro- + technic, technical: cf. F. pyrotechnique. See Fire, Technical.] Of or pertaining to fireworks, or the art of forming them.
Pyrotechnical sponge. See under Sponge.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.