The Collaborative International Dictionary of English v.0.48:
Rubberize \Rub"ber*ize\, v. t. To coat or impregnate with rubber or a rubber solution or preparation, as silk. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
rubberize v 1: coat or impregnate with rubber; "rubberize fabric for rain coats" [syn: rubberize, rubberise, rubber]