cor·rode /kəˈrod/
 (vt.)使腐蝕,侵蝕,破壞(vi.)腐蝕,被侵蝕
 cor·rode /kəˈrod/ 動詞
 腐蝕
 Cor·rode v. t. [imp. & p. p. Corroded; p. pr. & vb. n. Corroding.]
 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.
    Aqua fortis corroding copper . . . is wont to reduce it to a green-blue solution.   --Boyle.
 2. To consume; to wear away; to prey upon; to impair.
 Cor·rode, v. i. To have corrosive action; to be subject to corrosion.
 Corroding lead, lead sufficiently pure to be used in making white lead by a process of corroding.
 Syn: -- To canker; gnaw; rust; waste; wear away.
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 corrode
      v 1: cause to deteriorate due to the action of water, air, or an
           acid; "The acid corroded the metal"; "The steady
           dripping of water rusted the metal stopper in the sink"
           [syn: eat, rust]
      2: become destroyed by water, air, or an etching chemical such
         as an acid; "The metal corroded"; "The pipes rusted" [syn:
          rust]