Meaning of “polythene” in the English Dictionary

british dictionary

"polythene" in British English

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polythenenoun [ U ]

uk /ˈpɒl.ɪ.θiːn/ us /ˈpɑː.lɪ.θiːn/ mainly UK US usually polyethylene

a light, usually thin, soft plastic, often used for making bags or for keeping things dry or fresh:

a polythene bag
They covered the broken windows with sheets of polythene.

(Definition of “polythene” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)