n.any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
UniversityofOregontrackcoachBillBowerman created the firstcushionedmid-sole by heatingpolyure-thaneonhiswife's waffle iron in the early 70s, which laterled to the creation of NikeAir.