n. pl. e·ter·ni·ties 1. Time without beginning or end; infinite time. 2. The state or quality of being eternal. 3. 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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