The Collaborative International Dictionary of English v.0.48:

Corrode \Cor*rode"\ (k?r-r?d") v. t. [imp. & p. p. Corroded;
   p. pr. & vb. n. Corroding.] [L. corrodere, -rosum; cor +
   rodere to gnaw: cf. F. corroder. See Rodent.]
   [1913 Webster]
   1. To eat away by degrees; to wear away or diminish by
      gradually separating or destroying small particles of, as
      by action of a strong acid or a caustic alkali.
      [1913 Webster]

            Aqua fortis corroding copper . . . is wont to reduce
            it to a green-blue solution.          --Boyle.
      [1913 Webster]

   2. To consume; to wear away; to prey upon; to impair.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

damaged \damaged\ (d[a^]m"[asl]jd), adj.
   1. changed so as to reduce value, function, or other
      desirable trait; -- usually not used of persons. Opposite
      of undamaged. [Narrower terms: battered, beat-up,
      beaten-up, bedraggled, broken-down, dilapidated,
      ramshackle, tumble-down, unsound; bent, crumpled,
      dented; blasted, rent, ripped, torn; broken-backed;
      burned-out(prenominal), burned out(predicate),
      burnt-out(prenominal), burnt out(predicate); burst,
      ruptured; corroded; cracked, crackled, crazed;
      defaced, marred; hurt, weakened;
      knocked-out(prenominal), knocked out; mangled,
      mutilated; peeling; scraped, scratched;
      storm-beaten] Also See blemished, broken, damaged,
      destroyed, impaired, injured, unsound.
      [WordNet 1.5]

   2. Rendered imperfect by impairing the integrity of some
      part, or by breaking. Opposite of unbroken. [Narrower
      terms: busted; chipped; cracked; crumbled,
      fragmented; crushed, ground; dissolved; fractured;
      shattered, smashed, splintered; split; unkept,
      violated] Also See: damaged, imperfect, injured,
      unsound.

   Syn: broken.
        [WordNet 1.5]

   3. being unjustly brought into disrepute; as, her damaged
      reputation.

   Syn: discredited.
        [WordNet 1.5]

   4. made to appear imperfect; -- especially of reputation; as,
      the senator's seriously damaged reputation.

   Syn: besmirched, flyblown, spotted, stained, sullied,
        tainted, tarnished.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

corroded
    adj 1: eaten away as by acid or oxidation