Styrofoam

//ˈstaɪ.ɹə.fəʊm// noun

Definitions

Noun
  1. 1
    Expanded polystyrene foam, such as is used in cups and packaging. countable, uncountable

    "A while ago I read your column concerning the effects of hot tea on styrofoam cups."

  2. 2
    a light resilient foam of polystyrene wordnet

Etymology

Genericized trademark of Styrofoam, from -styr- (from polystyrene) + -o- + foam.

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