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polyethylene
noun
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How to pronounce polyethylene:

Definition of polyethylene:

polyethylene (noun):
a polymer of ethylene
a lightweight thermoplastic; used especially in packaging and insulation.
any of various partially crystalline lightweight thermoplastics (ch2ch2)x that are resistant to chemicals and moisture, have good insulating properties, and are used especially in packaging and insulation

Synonyms for polyethylene:

polythene

Other 5-syllable words like polyethylene

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