Noun has 1 sense

• pyrotechnic(n = noun.artifact) firework - (usually plural) a device with an explosive that burns at a low rate and with colored flames; can be used to illuminate areas or send signals etc.;

Adjective has 2 senses

• pyrotechnic(a = adj.pert) pyrotechnical - of or relating to the craft of making fireworks; "pyrotechnic smokes"
Derived form noun pyrotechny₁

• pyrotechnic(s = adj.all) - suggestive of fireworks; "a pyrotechnic wit"; "pyrotechnic keyboard virtuosity"

Derived form noun pyrotechny₁