pyrotechny

1. (figuratively) Impressive, dazzling or virtuosic display.Examples: "But if all rhetoric is a mode of pyrotechny, and all pyrotechnics are by necessity fugacious, yet even in these frail pomps there are many degrees of frailty."; "It was Le Gascon who, not finding room enough for his exquisite pyrotechny on the outside of the volumes that he had to bind, conceived the idea of lining the side-covers with morocco and continuing his brilliant fiorituri on the inside too."; "A score of years ago those who cared at all for the dramatic element in opera, and the measure of whose delight was not filled up by the vocal pyrotechny which was the mainstay of the operas of the older répertoire, found in these music-dramas their chief solace and satisfaction."figurativelyuncountable

2. (obsolete) The manufacture and use of gunpowder, bombs etc.Examples: "Gunpowder and the compositions of pyrotechny are the means used, in modern warfare, to propel projectiles, explode mines, destroy ships and buildings, and furnish light and signals for the operations of an army at night."obsoleteuncountable