Vulcanised vs. Vulcanized — What's the Difference?

Difference Between Vulcanised and Vulcanized
Definitions
Vulcanised➦
Simple past tense and past participle of vulcanise
Vulcanized➦
To improve the strength, resiliency, and freedom from stickiness and odor of (rubber, for example) by combining with sulfur or other additives in the presence of heat and pressure.
Vulcanised➦
(used of rubber, e.g.) treated by a chemical or physical process to improve its properties (hardness and strength and odor and elasticity)
Vulcanized➦
Simple past tense and past participle of vulcanize
Vulcanized➦
(used of rubber, e.g.) treated by a chemical or physical process to improve its properties (hardness and strength and odor and elasticity)