Styrofoam™
noun /ˈstaɪrəfəʊm/
/ˈstaɪrəfəʊm/
(especially North American English) (also polystyrene British and North American English)
[uncountable]- a very light soft plastic that is usually white, used especially for making containers that prevent heat loss
- Styrofoam cups
Oxford Collocations DictionaryStyrofoam™ is used before these nouns:- cup
Word Origin1950s: from polystyrene + foam.