polytechnic (adj.)
1805, "pertaining to instruction in many (technical) subjects," from French École Polytechnique, engineering school founded 1794 (as École des Travaux publics) in Paris; from Greek polytekhnos "skilled in many arts," from polys "many" (see poly-) + tekhne "art" (see techno-). As a noun (short for polytechnic institution) from 1836.