Below you can find the In 1938 chemist roy plunkett invented polytetra-fluoroethylene a nonstick substance better known as this Jeopardy Words Answer. The answer to In 1938 chemist roy plunkett invented polytetra-fluoroethylene a nonstick substance better known as this has 6 letters. This clue belongs to the Inventors & inventions category and is part of Jeopardy Word Level 678. If you scroll near the bottom you will find other clues and answers part of level 678