IPA: /ˌpɒliˈvaɪnəl/
KK: /pɑːliˈvaɪnəl/
Relating to a type of plastic made from vinyl, often used in various products like pipes and flooring.
The new flooring in the kitchen is made of polyvinyl, which is durable and easy to clean.
Polyvinyl → It is formed from "poly-" (from Greek "polus", meaning many) and "vinyl" (from Latin "vinum", meaning wine, but in this context refers to a synthetic polymer derived from vinyl chloride). The word "polyvinyl" refers to a type of plastic made from many vinyl units.
Think of 'many' ('poly-') units of a synthetic material derived from 'vinyl' — that's what polyvinyl means.
No commonly confused words.