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polyolefin

[pol-ee-oh-luh-fin] /ˌpɒl iˈoʊ lə fɪn/
noun, Chemistry
1.
any of a group of thermoplastic, stiff, light, and hard polymers obtained from the polymerization of simple olefins like propylene, used for injection molding, mostly in the automotive and appliance industries.
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Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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