WordReference English-Spanish Dictionary © 2014:

Principal Translations
eternity nnoun: Refers to person, place, thing, quality, etc. (infinite time)eternidad nfnombre femenino: Sustantivo de género exclusivamente femenino ("mesa", "tabla").
an eternity nnoun: Refers to person, place, thing, quality, etc. informal, figurative (long time)  (figurado)eternidad nfnombre femenino: Sustantivo de género exclusivamente femenino ("mesa", "tabla").
 School seemed to go on for an eternity.
 La escuela parecía durar una eternidad.
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WordReference English-Spanish Dictionary © 2014:

Compound Forms:
an eternity nnoun: Refers to person, place, thing, quality, etc. informal, figurative (forever)  (figurado)una eternidad nfnombre femenino: Sustantivo de género exclusivamente femenino ("mesa", "tabla").
 It's been an eternity since we last saw you!
eternity ring alianza nfnombre femenino: Sustantivo de género exclusivamente femenino ("mesa", "tabla").
for eternity advadverb: Describes a verb, adjective, adverb, or clause--for example, "come quickly," "very rare," "happening now," "fall down." (forever, for all time)para toda la eternidad loc advlocución adverbial: Unidad léxica estable formada de dos o más palabras que funciona como adverbio ("en vilo", "de seguido", "a quemarropa").
  eternamente advadverbio: Describe al verbo, al adjetivo o a otro adverbio ("corre rápidamente", "sucede ahora", "muy extraño").
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'eternity' found in these entries
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