From Longman Dictionary of Contemporary EnglishRelated topics: Plasticspolythenepol‧y‧thene /ˈpɒləθiːn $ ˈpɑː-/ noun [uncountable]British EnglishHCP a strong light plastic used to make bags, sheets for covering food, small containers etcSYN polyethylene American EnglishExamples from the Corpuspolythene• Chrissie passed Bodie a polythenesnapper bag, then left the room again.• Opening a polythene bag or a can is the most we manage to do.• Piece of bluepolythene sheeting used to carrycoals also discovered close to scene of fire where humanremains found.• Wrap with moss held in place with clearpolythenetied either side with raffia or tape.• This, however, had the effect of dramatically expanding the market for polythene.• After location, chromatograms were kept refrigerated in polytheneenvelopes, and exposure was minimised during scanning.• The powderslipped unprotesting into the polythene bag, which he then quickly resealed.