- (uncountable) Existence without end, infinite time.
- (countable) A period of time which extends infinitely far into the future.
- (metaphysical) The period of time that elapses after death.
- (context, informal, hyperbolic) A comparatively long time.
- It's been an eternity since we last saw each other.
- French: éternité
- German: Ewigkeit
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