1. a transparent, lightweight plastic material made from acrylic resin, used as a shatter-resistant substitute for glass
Usage: often used as a trademark (Plexiglas) but commonly used generically; also called acrylic or acrylic plastic

Examples

• The aquarium's viewing window is made of plexiglass to keep the fish safe.
• Plexiglass shields were installed at the checkout counters during the pandemic.
• The artist used plexiglass to create a modern sculpture.
• Store windows are often made of plexiglass because it is more durable than glass.
• The hockey rink's protective barriers are constructed from reinforced plexiglass.
• Plexiglass is lighter and cheaper than traditional glass for many applications.