[ plek-si-glas, -glahs ]
/ ˈplɛk sɪˌglæs, -ˌglɑs /


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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for plexiglas

British Dictionary definitions for plexiglas


/ (ˈplɛksɪˌɡlɑːs) /


trademark US 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

Word Origin and History for plexiglas



1935, proprietary name (Röhm & Haas) for a substance also sold as Perspex and Lucite. Often written incorrectly as plexiglass.

Online Etymology Dictionary, © 2010 Douglas Harper