
1) Engine technology
Found on
https://www.crosswordclues.com/clue/pyréolophore

(A new Machine whose driving principle is air dilated by fire.) The Pyréolophore (pronounced pea-ray-oh-loh-for; {ety|grc|πῦρ, pyr|fire||Αἴολος, Αiolos|wind||-φόρος -phoros|bearer}) was probably the world`s first internal combustion engine. It was invented in the early 19th century in Chalon-sur-Saône, France, by the Niépce br....
Found on
http://en.wikipedia.org/wiki/Pyréolophore

(from the article `Niépce, Nicéphore`) In 1807 Niépce and his brother Claude invented an internal-combustion engine, which they called the Pyréolophore, explaining that the word was ...
Found on
http://www.britannica.com/eb/a-z/p/137
No exact match found.