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Plexiglas

American  
[plek-si-glas, -glahs] / ˈplɛk sɪˌglæs, -ˌglɑs /
Trademark.
  1. a brand name for a thermoplastic polymer of methyl methacrylate that is light in weight, resistant to weathering, capable of being bent when hot but returning to its original shape when reheated, used for signs


Plexiglas British  
/ ˈplɛksɪˌɡlɑːs /

noun

  1. a transparent plastic, polymethylmethacrylate, used for combs, plastic sheeting, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012