Source : Webster's Revised Unabridged Dictionary (1913)

Erosive \E*ro"sive\, a.
   That erodes or gradually eats away; tending to erode;
   corrosive. --Humble.

Source : WordNet®

erosive
     adj 1: wearing away by friction; "the erosive effects of waves on
            the shoreline"
     2: of a substance, especially a strong acid; capable of
        destroying or eating away by chemical action [syn: {caustic},
         {corrosive}, {vitriolic}]