any of several substances similar to natural rubber in properties and uses, produced by the polymerization of an unsaturated hydrocarbon, as butylene or isoprene, or by the copolymerization of such hydrocarbons with styrene, butadiene, or the like.
SYNTHETIC RUBBER
Meaning of SYNTHETIC RUBBER in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012