Webster's Revised Unabridged Dictionary · 1913

Vulcanize

Vulcanize , transitive verb

To change the properties of, as caoutchouc, or India rubber, by the process of vulcanization.
Collocations (2)
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.