"manufacturer of fireworks, one skilled in pyrotechny," 1729, from pyrotechnic + -an.
Entries linking to pyrotechnician
pyrotechnic adj.
1704, "of or pertaining to the use of fire" (a sense now obsolete); 1825, "of or pertaining to fireworks and the art of making them," from pyrotechny "the manufacture and use of gunpowder" (1570s), from pyro- "fire" + Latinized form of Greek tekhnē "art" (see techno-).
Figurative use, "brilliant, explosive display," is attested from 1847. Related: Pyrotechnical (1610s, from pyrotechny).
-an
word-forming element meaning "pertaining to," from Latin -anus, adjective suffix, in some cases via French -ain, -en. From PIE *-no-.