1. 
2. 
[syn: caustic, corrosive, erosive, vitriolic, mordant]
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]
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]