Plexiglass, also known as acrylic glass, is a transparent thermoplastic often used as a lightweight and shatter-resistant alternative to glass. It is made from polymethyl methacrylate (PMMA) and is known for its clarity, UV resistance, and ability to be easily molded into various shapes. Common applications of plexiglass include windows, display cases, and protective barriers. Its versatility makes it popular in both commercial and residential settings, where it can be used for everything from aquariums to signage. Plexiglass can also be easily cut and shaped, allowing for creative designs and uses.