The Collaborative International Dictionary of English v.0.48:

Eternity \E*ter"ni*ty\, n.; pl. Eternities. [F.
   ['e]ternit['e], L. aeternitas, fr. aeternus. See Etern.]
   1. Infinite duration, without beginning in the past or end in
      the future; also, duration without end in the future;
      endless time.
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            The high and lofty One, that inhabiteth eternity.
                                                  --Is. lvii.
                                                  15.
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   2. Condition which begins at death; immortality.
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            Thou know'st 't is common; all that lives must die,
            Passing through nature to eternity.   --Shak.
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