poly·ure·thane 
/ˌpɑliˈjɚrəˌθeɪn/ noun
/ˌpɑliˈjɚrəˌθeɪn/ noun [noncount] : a type of plastic that is used to make various products and especially to make a clear liquid that is spread on a surface (such as a wooden floor) and that becomes hard when it dries
▪ The floor will need two coats of polyurethane.
▪ The floor will need two coats of polyurethane.
