Definition of styrofoam in English:

styrofoam

Syllabification: sty·ro·foam
Pronunciation: /ˈstīrəˌfōm
 
/

noun

trademark
  • A kind of expanded polystyrene.
    More example sentences
    • However, plastic and styrofoam must be separated from the rest of the garbage.
    • Popsicle sticks are still in vogue, as are styrofoam, garden hose tubing, particle board, wire and glitter glue.
    • The piece of styrofoam washing up to shore contrasts starkly with the shellfish pushing through the sand a centimetre beneath the surface.

Origin

1950s: from polystyrene + foam.

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