n. pl. e·ter·ni·ties
1. Time without beginning or end; infinite time.
2. The state or quality of being eternal.
a. The timeless state following death.
b. The afterlife; immortality.
4. A very long or seemingly endless time: waited in the dentist's office for an eternity.
[Middle English eternite, from Old French, from Latin aeternitās, from aeternus, eternal; see ETERNAL.]
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