While I was reading La révolution industrielle au Moyen Âge (The Medieval Machine: The Industrial Revolution of the Middle Ages) by Jean Gimpel, I’ve read:
In the old texts, James of Saint George is called the machoun, or sometimes machinator, sometimes also ingeniator.
(p.114 of the French edition)
The expression ingeniator was generally reserved for architects who specialized in building military installations.
(p. 115, ibid.)
Machoun seems to be old French as I’ve found the expression “Mestre Jakes de Seint Jorge le Machoun”.
Traupman translates engineer by machinator. It seems that in most languages the term for engineer derives from French ingénieur which derives from Latin ingeniator (En. engineer, Ge. Ingenieur, Sp. ingeniero, It. ingegnere…).
Do you know other Latin words for engineer? When possible, providing an history of the use of those words would be perfect.