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Pronunciation of Polystyrenes: Learn how to pronounce Polystyrenes in English correctly

Learn how to say Polystyrenes correctly in English with this tutorial pronunciation video.

Oxford dictionary definition of the word polystyrene:

[mass noun]
a synthetic resin which is a polymer of styrene, used chiefly as lightweight rigid foams and films:
these plaques are moulded in black polystyrene
[as modifier]:
a polystyrene cup