An Ablation

1. (obsolete) A carrying or taking away; removal. [First attested around 1350 to 1470.]^[1]
2. (medicine) The surgical removal of a body part, an organ, or especially a tumor; the removal of an organ function; amputation. [First attested around 1350 to 1470.]^[1] Ablation - Wikipedia
3. (sciences) The progressive removal of material by any of a variety of processes such as vaporization under heat or chipping. [Mid 20^th century.]^[1]
4. (geology) The removal of a glacier by melting and evaporation; the lowering of a land surface by any of several means, as in wind erosion, mass wasting. [Mid 20^th century.]^[1]
5. (meteorology) The depletion of surface snow and ice by melting and evaporation.