polystyrene
poly·sty·rene
noun \ˌpä-lē-ˈstī-ˌrēn\Definition of POLYSTYRENE
: a polymer of styrene; especially : a rigid transparent thermoplastic that has good physical and electrical insulating properties and is used especially in molded products, foams, and sheet materials
See First Known Use of POLYSTYRENE
1927
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