polyéthylène [ pɔlietilɛn ] n. m.
• 1946; de poly- et éthylène
Matière plastique obtenue par polymérisation de l'éthylène, solide translucide, thermoplastique. polythène. Propriétés isolantes du polyéthylène.

polyéthylène nom masculin Nom générique de l'ensemble des polymères de l'éthylène, de formule générale (CH2CH2)n.

polyéthylène ou (nom déposé) polythène
n. m. Matière plastique obtenue par polymérisation de l'éthylène, utilisée notam. pour fabriquer des récipients souples, des tuyaux et des feuilles pour l'emballage.

polyéthylène [pɔlietilɛn] ou polythène [pɔlitɛn] n. m.
ÉTYM. Mil. XXe; de poly-, et éthylène.
Matière plastique obtenue par polymérisation de l'éthylène, solide translucide, thermoplastique. || Propriétés isolantes du polythène, utilisées notamment dans les câbles électriques.

Encyclopédie Universelle. 2012.

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