Nouns

(n)firework, pyrotechnic(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.

Adjectives

(a)pyrotechnic, pyrotechnicalof or relating to the craft of making fireworks“pyrotechnic smokes”
(s)pyrotechnicsuggestive of fireworks“pyrotechnic keyboard virtuosity”, “a pyrotechnic wit”