BACK TO polystyrene

polystyrene vs. Styrofoam

[ pol-ee-stahy-reen, -steer-een ]
noun
  1. a clear plastic or stiff foam, a polymer of styrene, used chiefly as an insulator in refrigerators and air conditioners.
[ stahy-ruh-fohm ]
  1. a brand of expanded plastic made from polystyrene.

Compare More Commonly Confused Words