erosive

from WordNet (r) 3.0 (2006)

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}, {erosive}, {vitriolic}, {mordant}]

from The Collaborative International Dictionary of English v.0.48

Erosive \E*ro"sive\, a.
   That erodes or gradually eats away; tending to erode;
   corrosive. --Humble.
   [1913 Webster]