VULCANIZED
cured, vulcanized, vulcanised
(adjective) (used of rubber) treated by a chemical or physical process to improve its properties (hardness and strength and odor and elasticity)
Source: WordNet® 3.1
Verb
vulcanized
simple past tense and past participle of vulcanize
Source: Wiktionary
VULCANIZE
Vul"can*ize, v. t. [imp. & p. p. Vulcanized; p. pr. & vb. n.
Vulcanizing.]
Definition: To change the properties of, as caoutchouc, or India rubber, by
the process of vulcanization. Vulcanized fiber, paper, paper pulp, or
other fiber, chemically treated, as with metallic chlorides, so as to
form a substance resembling ebonite in texture, hardness, etc.
Knight.
– Vulcanized rubber, India rubber, vulcanized.
Source: Webster’s Unabridged Dictionary 1913 Edition