[mass noun](trademark, chiefly N. Amer.)a solid transparent plastic made of polymethyl methacrylate (the same material as perspex or lucite) (商标,主北美)普列克斯玻璃(一种用聚甲基丙烯酸甲酯[与珀斯佩有机玻璃或人造萤光树脂相同的材料]制成的固态透明塑料)
Plexiglas is made of polymethyl methacrylate. perspex and lucite are other trade names for the same kind of material