I. ˌpī-rə-ˈtek-nik adjective
also py·ro·tech·ni·cal -ni-kəl
Etymology: French pyrotechnique, from Greek pyr fire + technē art — more at technical
Date: 1755
: of or relating to pyrotechnics
• py·ro·tech·ni·cal·ly -ni-k(ə-)lē adverb
II. noun
Date: 1840
1.
a. : firework
b. : any of various similar devices (as for igniting a rocket or producing an explosion)
2. : a combustible substance used in a firework