Definition of polystyrene

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  • polystyrene is a valid Scrabble US word with a point value of 19
  • polystyrene is a valid Scrabble UK word with a point value of 19
  • polystyrene is a valid Words with friends word with a point value of 20

Definition of polystyrene

  • a polymer of styrene; a rigid transparent thermoplastic (noun)

    Examples

    1. expanded polystyrene looks like a rigid white foam and is used as packing or insulation

See definition of polystyrene in Merriam Webster