We found 3 dictionaries that define the word an eternity:

General (3 matching dictionaries)

1. an eternity: Oxford Learner's Dictionaries
2. an eternity: Cambridge Advanced Learner's Dictionary
3. an eternity: Longman Dictionary of Contemporary English

Phrases: lasting an eternity, what an eternity has, felt like an eternity, more... ▸ Words similar to an eternity ▸ Usage examples for an eternity ▸ Idioms related to an eternity ▸ Wikipedia articles (New!) ▸ Words that often appear near an eternity ▸ Rhymes of an eternity ▸ Invented words related to an eternity