noun Chemistry.
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.

poly- + olefin

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Encyclopedia Britannica


any of a class of organic substances prepared by the addition polymerization of olefins (hydrocarbons containing one double bond per molecule), especially ethylene and propylene.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Wraps usually consist of fibrous spun polyolefin plastic, which is matted into sheets and rolled up for shipping.
Effects of loads on the structural and fracture behavior of polyolefin gas piping.
The merchandise is used as a slip agent for polyolefin products.
For use only in coatings for polyolefin films that contact food at temperatures not to exceed room temperature.
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