Sty‧ro‧foam /ˈstaɪərəfəʊm $ ˈstaɪrəfoʊm/
noun [uncountable] trademark a soft light plastic material that prevents heat or cold from passing through it, used especially to make containers
Synonym : polystyrene British English:
a Styrofoam cup [TahlilGaran] Dictionary of Contemporary English ▲