Quality of something/someone that is not subject to death, i.e. The immortality of the gods
That lives or lasts for ever.
But eternity (without begining) ≠ immortality (with begining)
The movie IRobot, Alex Proyas
Famous and likely to be remembered for ever.
«Every idea is endowed of itself with immortal life. All created form, even that which is created by man, is immortal. For form is independent of matter: molecules do not constitute form.»
Baudelaire, Mon coeur mis à nu.