polystyrene
noun /ˌpɒliˈstaɪriːn/
/ˌpɑːliˈstaɪriːn/
(also Styrofoam™ especially in North American English)
[uncountable]- a very light soft plastic that is usually white, used especially for making containers that prevent heat loss
- polystyrene cups
Oxford Collocations DictionaryPolystyrene is used before these nouns:- cup