Definition of polyurethane
: any of various polymers that contain NHCOO linkages and are used especially in flexible and rigid foams, elastomers, and resins (as for coatings)
Examples of polyurethane in a sentence
The floor will need two coats of polyurethane.
Origin and Etymology of polyurethane
International Scientific Vocabulary
First Known Use: 1944
POLYURETHANE Defined for English Language Learners
Definition of polyurethane for English Language Learners
: 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
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