스티렌을 중합하여 만든 합성 수지로, 주로 가벼운 발포체나 필름의 형태로 사용되는 물질.
A synthetic resin which is a polymer of styrene, used chiefly as lightweight rigid foams and films.
예문:
"The takeaway container was made of expanded polystyrene to insulate the food."
"Polystyrene is widely used in the packaging industry due to its lightweight and shock-absorbing properties."
"Environmentalists are concerned about the slow decomposition rate of polystyrene products in landfills."