Longevity is the term for a person's life that been extended beyond its natural span. People with an extended life span can also recover from injuries. In Dakar's case, he is able to regenerate from an otherwise fatal stab wound.
The Fellowship can accomplish such a binding within the laws of grand conjury, and they themselves have lived for many centuries. The Koriathain attain longevity through a forced attunement of the sorceress' personal crystal -- this painful process takes six months.
Lysaer and Arithon also have longevity from drinking at the Five Centuries Fountain. Since the fountain was created by Davien, it is presumed that this longevity is patterned in the same fashion as other Fellowship bindings. Although they are granted a five hundred year lifespan, it would still be possible to kill them (for example, by sword and fire).
Characters with Fellowship Longevity
|Spoiler warning: Contains plot elements from Ships of Merior.
|Spoiler warning: Contains plot elements from Destiny's Conflict.