Longman Dictionary of Contemporary English homepage

Styrofoam

 noun
     
Related topics: Industry
Sty‧ro‧foam [uncountable]
trademarkTI a soft light plastic material that prevents heat or cold from passing through it, used especially to make containers [= polystyrene British English]
a Styrofoam cup
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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