The Collaborative International Dictionary of English v.0.48:

Corrosive \Cor*ro"sive\, n.
   1. That which has the quality of eating or wearing away
      gradually.
      [1913 Webster]

            [Corrosives] act either directly, by chemically
            destroying the part, or indirectly by causing
            inflammation and gangrene.            --Dunglison.
      [1913 Webster]

   2. That which has the power of fretting or irritating.
      [1913 Webster]

            Such speeches . . . are grievous corrosives.
                                                  --Hooker.
      -- Cor*ro"sive*ly, adv. -- Cor*ro"sive*ness, n.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Corrosive \Cor*ro"sive\ (k?r-r?"s?v), a. [Cf. F. corrosif.]
   1. Eating away; having the power of gradually wearing,
      changing, or destroying the texture or substance of a
      body; as, the corrosive action of an acid. "Corrosive
      liquors." --Grew. "Corrosive famine." --Thomson.
      [1913 Webster]

   2. Having the quality of fretting or vexing.
      [1913 Webster]

            Care is no cure, but corrosive.       --Shak.
      [1913 Webster]

   Corrosive sublimate (Chem.), mercuric chloride, HgCl2; so
      called because obtained by sublimation, and because of its
      harsh irritating action on the body tissue. Usually it is
      in the form of a heavy, transparent, crystalline
      substance, easily soluble, and of an acrid, burning taste.
      It is a virulent poison, a powerful antiseptic, and an
      excellent antisyphilitic; called also mercuric
      bichloride. It is to be carefully distinguished from
      calomel, the mild chloride of mercury.
      [1913 Webster]

WordNet (r) 3.0 (2006):

corrosive
    adj 1: of a substance, especially a strong acid; capable of
           destroying or eating away by chemical action [syn:
           caustic, corrosive, erosive, vitriolic,
           mordant]
    2: spitefully sarcastic; "corrosive cristism"
    n 1: a substance having the tendency to cause corrosion (such a
         strong acids or alkali)

Moby Thesaurus II by Grady Ward, 1.0:

125 Moby Thesaurus words for "corrosive":
   ablative, acerb, acerbate, acerbic, acid, acidic, acidulent,
   acidulous, acrid, acrimonious, actual cautery, angry, baleful,
   baneful, biodegradable, biting, bitter, brand, brand iron,
   branding iron, caustic, cauter, cauterant, cauterizer, cautery,
   corroding, corrupting, corruptive, counterproductive, cutting,
   damaging, deadly, decomposable, decomposing, degradable,
   deleterious, detrimental, dilapidated, disadvantageous,
   discontented, disintegrable, disintegrated, disintegrating,
   disintegrative, disjunctive, disruptive, disserviceable,
   distressing, driving, effective, electrocautery, eroding, erosive,
   escharotic, feeling evil, forceful, forcible, gutsy, harmful,
   hot iron, hurtful, imperative, impressive, incisive, injurious,
   keen, lethal, lunar caustic, malefic, malevolent, malign,
   malignant, mischievous, moldering, mordacious, mordant, moxa,
   nervous, noisome, noxious, ominous, out of humor, out of sorts,
   out of temper, penetrating, pernicious, piercing, poignant,
   poisonous, potential cautery, powerful, prejudicial, punchy,
   radium, ravaged, resolvent, ruinous, scatheful, scathing,
   scorching, sensational, separative, sharp, sinewed, sinewy,
   slashing, solvent, stabbing, stinging, striking, strong, tart,
   telling, toxic, trenchant, venenate, veneniferous, venenous,
   venomous, vicious, vigorous, virulent, vital, withering, worn