pol·y·tech·nic (pŏl'ē-těk'nĭk) adj. Offering, receiving, or dealing with instruction in many industrial arts and applied sciences: a polytechnic institute. n. A school specializing in the teaching of industrial arts and applied sciences.
1805, from Fr. École Polytechnique, engineering school founded 1794 (as École des Travaux publics) in Paris; from Gk. polytekhnos "skilled in many arts," from polys "many" (see poly-) + tekhne "art."