vulcanization
vul.can.iza.tion \.v*l-k*-n*-'za--sh*n\ n : the process of treating crude or synthetic rubber or similar plastic mat erial chemically to give it useful properties (as elasticity, strength, and stability)
Webster's English Dictionaryvul.can.iza.tion \.v*l-k*-n*-'za--sh*n\ n : the process of treating crude or synthetic rubber or similar plastic mat erial chemically to give it useful properties (as elasticity, strength, and stability)