PYROTECHNY Meaning of PYROTECHNY in English ■ noun1》 historical the use of fire in alchemy. 2》 another term for pyrotechnics .OriginC16: from Fr. pyrotechnie or mod. L. pyrotechnia , from Gk pur 'fire' + tekhnē 'art'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004