verb (used with object), vul·can·ized, vul·can·iz·ing.
- to treat (rubber) with sulfur and heat, thereby imparting strength, greater elasticity, durability, etc.
- to subject (a substance other than rubber) to some analogous process, as to harden it.
- to treat (rubber) with sulphur or sulphur compounds under heat and pressure to improve elasticity and strength or to produce a hard substance such as vulcanite
- to treat (substances other than rubber) by a similar process in order to improve their properties
- To harden rubber by combining it with sulfur or other substances in the presence of heat and pressure. Vulcanization gives rubber strength, resistance, and elasticity.
An industrial process that strengthens natural rubber. Because it requires great heat, the process was named after the Roman god of fire, Vulcan.