erosion

noun8

1. •
   The result of having been worn away or eroded, as by a glacier on rock or the sea on a cliff face.

   • Father Ted: The cliffs were gone? How could they just disappear? Dougal: Erosion. — 1995
2. •
   The changing of a surface by mechanical action, friction, thermal expansion contraction, or impact.
3. •
   Destruction by abrasive action of fluids.
4. •
   Loss of tooth enamel due to non-bacteriogenic chemical processes.
5. •
   (figurative) The gradual loss of something as a result of an ongoing process.

   • trademark erosion, caused by everyday use of the trademarked term
6. •
   A shallow ulceration or lesion, usually involving skin or epithelial tissue.
7. •
   One of two fundamental operations in morphological image processing from which all other morphological operations are derived.
8. •
   In morphology, a basic operation (denoted ⊖); see Erosion (morphology).