• noun a type of plastic used to make artificial fibres, bottles, pipes, and other articles, which is not degradable and must be recycled or destroyed by incineration
  • A synthetic and tough thermoplastic material which is made via the polymerization of propylene, whose chemical formula is C3H6. It is water-resistant, oil-resistant, is used as an insulator and dielectric, and in molded articles such as containers.

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