\Pyr`o*tech"nic\, Pyrotechnical \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}.