pyrotechny
/ˈpʌɪrətɛkniː
/noun [mass noun]
1 historical The use of fire in alchemy.
2 another term for pyrotechnics.It is only to be expected that the writings of such a distinguished fireworker would be eagerly sought by anyone interested in pyrotechny.
Origin
Late 16th century: from French pyrotechnie or modern Latin pyrotechnia, from Greek pur + tekhnē 'art'.