A polymer (such as polyethylene) made by the polymerization of an olefin(noun)
A polyene(noun)
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Use "polyolefin" in a sentence
"The price per pound of Cereplast Hybrid Resins is similar to the price of traditional polyolefin."
"The Institute assessed three alternative flooring materials: natural linoleum, cork, and polyolefin."
"Linoleum and polyolefin flooring materials offer a range of colors and patterns that make them similar to DEHP/PVC in this regard, while cork is more limited in this respect."