[1] : The Collaborative International Dictionary of English v.0.48

erode \erode"\, v. t. imp.  p. p. eroded; p. pr.  vb. n.
   eroding. l. erodere, erosum; e out + rodere to gnaw. see
   rodent.
   1. to eat into or away; to corrode; as, canker erodes the
      flesh. "the blood . . . erodes the vessels." --wiseman.
      1913 webster

            the smaller charge is more apt to . . . erode the
            gun.                                  --am. cyc.
      1913 webster

   2. geol.  phys. geog.
      a to wear away; as, streams and glaciers erode the land.
      b to produce by erosion, or wearing away; as, glaciers
          erode u-shaped valleys.
          webster 1913 suppl.

   3. to reduce or lessen as if by eroding; as, a politician's
      base of support is eroded by evidence of corruption; the
      buying power of the dollar is eroded by inflation. fig.
      pjc
see also:
eroded eroding rodent 

[2] : WordNet (r) 2.0

eroding
     n : geology the mechanical process of wearing or grinding
         something down as by particles washing over it syn: erosion,
          eating away, wearing, wearing away
see also:
erosion eating away wearing wearing away 

Eroding >> E Words
Eroding, definition of term: Eroding
eroding_pag1.html