1.A carrying or taking away; removal.
3.(Med.) Removing or destroying of a body tissue, especially by a surgical procedure.
4.(Geol.) Wearing away; superficial waste, as of glacial ice or snow.
5.(Aerospace) Wearing away of the outer layers of a protective shield or surface by the heat and aerodynamic forces caused by flying through the atmosphere at hypersonic speed, as during reentry from space; as, ablation of the heat shield during reentry.