långivers
Långivers is a fictional concept used in science fiction and speculative settings to describe entities or systems that confer extended lifespans to other beings. The term is a neologism formed from the Swedish lång, meaning long, combined with a suffix implying agents or supporters of longevity.
In fictional portrayals, långivers can take various forms. They may be biological agents—engineered organisms or tissues
Relation to reality and interpretation: the concept of långivers is a narrative device rather than a scientific
See also: aging, longevity, biogerontology, immortality, transhumanism.