polybutadiene

[ pol-ee-byoo-tuh-dahy-een, -dahy-een ]
/ ˌpɒl iˌbyu təˈdaɪ in, -daɪˈin /

noun Chemistry.

a rubberlike polymer of butadiene blended with other synthetics to replace natural rubber in tires.

Origin of polybutadiene

First recorded in 1930–35; poly- + butadiene