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Definition of Polystyrene
1. Noun. A polymer of styrene; a rigid transparent thermoplastic. "Expanded polystyrene looks like a rigid white foam and is used as packing or insulation"
Definition of Polystyrene
1. Noun. (organic chemistry) A vinylic polymer of styrene, CH2CHphenyl. ¹
2. Noun. (organic chemistry) An alkane chain of benzene molecules, RCH2CHphenylR. ¹
¹ Source: wiktionary.com
Definition of Polystyrene
1. [n -S]