IPA: /ˌpɒliˈoʊlɪfɪn/
KK: /pɑːliˈoʊlɪfɪn/
A type of plastic made from the polymerization of olefins, commonly used in packaging and other products.
Polyolefin materials are widely used in the production of plastic bags and containers.
Polyolefin → It is formed from "poly-" (from Greek "polus", meaning many) and "olefin" (from Latin "olefina", meaning oil-forming). The word refers to a type of polymer that is derived from many oil-forming compounds, typically used in plastics.
Think of 'many' ('poly-') oil-forming compounds coming together to create a type of plastic — that's what polyolefin means.
No commonly confused words.