The Open Dictionary

Styrofoam

noun

UK/ˈstaɪ.rə.fəʊm/
US/ˈstaɪ.rə.foʊm/

Definitions of Styrofoam noun

  1. Uncountable

    A brand name for a type of polystyrene foam, typically white, used for protective packaging or insulation.

    • The package was filled with Styrofoam to protect the items inside.

    • They use Styrofoam cups for hot drinks because it provides good insulation.

    • Many manufacturers use Styrofoam to package their products.