The Collaborative International Dictionary of English v.0.48:

Perdition \Per*di"tion\ (p[~e]r*d[i^]sh"[u^]n), n. [F., fr. L.
   perditio, fr. perdere, perditum, to ruin, to lose; per (cf.
   Skr. par[=a] away) + -dere (only in comp.) to put; akin to
   Gr. tiqe`nai, E. do. See Do.]
   1. Entire loss; utter destruction; ruin.
      [1913 Webster]

            The mere perdition of the Turkish fleet. --Shak.
      [1913 Webster]

   2. (religion) Damnation; the utter loss of the soul, or of
      final happiness in a future state; future misery or
      eternal death.
      [1913 Webster]

            If we reject the truth, we seal our own perdition.
                                                  --J. M. Mason.
      [1913 Webster]

   3. Loss or diminution. [Obs.] --Shak.
      [1913 Webster]

   4. Hell; hades; as, on the path to perdition.
      [PJC]

WordNet (r) 3.0 (2006):

perdition
    n 1: (Christianity) the abode of Satan and the forces of evil;
         where sinners suffer eternal punishment; "Hurl'd
         headlong...To bottomless perdition, there to dwell"- John
         Milton; "a demon from the depths of the pit"; "Hell is
         paved with good intentions"-Dr. Johnson [syn: Hell,
         perdition, Inferno, infernal region, nether region,
         pit] [ant: Heaven]

Moby Thesaurus II by Grady Ward, 1.0:

87 Moby Thesaurus words for "perdition":
   Abaddon, Gehenna, Hades, Naraka, Pandemonium, Sheol, Tophet, abyss,
   avichi, bereavement, bloodbath, blue ruin, breakup, carnage,
   condemnation, consumption, cost, damage, damnation, dead loss,
   debit, decimation, denial, denudation, depredation, deprivation,
   desolation, despoilment, despoliation, destruction, detriment,
   devastation, disintegration, disorganization, dispossession,
   disruption, dissolution, divestment, doom, downfall, expense,
   forfeit, forfeiture, hades, havoc, hecatomb, hell, holocaust,
   infernal regions, inferno, injury, jahannan, limbo, loser, losing,
   losing streak, loss, lower world, nether world, netherworld, pit,
   place of torment, privation, purgatory, ravage, robbery, ruin,
   ruination, sacrifice, shades below, shambles, slaughter,
   spoliation, stripping, taking away, the abyss, the bottomless pit,
   the grave, the pit, total loss, underworld, undoing, vandalism,
   waste, wrack, wrack and ruin, wreck