Immortality is never dying, or being remembered for ever. Seek immortality, literary immortality, the immortality of the soul.
The second sense is the live one: writers and athletes are said to win immortality, meaning their names outlast them. A few animals come close to the literal version — one jellyfish can revert to an earlier stage of its life. The Latin means not mortal.
1nounimmortalityNever dying, or being remembered for ever.
“In the old story, the king searched the world for a drink that would give him immortality.”
immortality is a state of not dying.
Latin immortalitas is in-, not, plus mortalis, mortal, from mors, death.
Proto-Indo-European
*mer-
Latin
immortālitās
Old French
immortalité
Middle English
immortalitee
English, today
immortality
From Middle English immortalitee, immortalite, from Old French immortalité, from Latin immortālitās. Morphologically immortal + ity.
Etymology from Wiktionary, CC BY-SA