polystyrene | sense examples, Usage and Definition from wordnet dictionary online

Noun polystyrene has 1 sense

polystyrene - a polymer of styrene; a rigid transparent thermoplastic; "expanded polystyrene looks like a rigid white foam and is used as packing or insulation"
--₁ is a kind of styrene, cinnamene, phenylethylene, vinylbenzene
--₁ has particulars: Styrofoam

,