Polymethylmethacrylate or Polymethyl methacrylate is the chemical name of a transparent thermoplastic that is commonly manufactured into sheets of various dimensions and thicknesses.
For the chemists out there, the full chemical name is:

poly(methyl 2-methylpropenoate)
It is also referred to as:

  • PMMA (PolyMethlMethAcrylate)
  • acrylic.

Because of its similarity to glass, acrylic is commonly called acrylic glass.
Some of the brand names of acrylic glass are:

  • Acrylite
  • Altuglas
  • Cyrolite
  • Lucite
  • Optix
  • Oroglas
  • Perspex
  • Plexiglas
  • R-Cast
  • Zylar