- Surgical excision or amputation of a body part or tissue.
- The erosive processes by which a glacier is reduced.
- Aerospace a. The dissipation of heat generated by atmospheric friction, especially in the atmospheric reentry of a spacecraft or missile, by means of a melting heat shield.b. The reduction or removal of heat-protective surface material by aerodynamic friction, as from a heat shield.
Origin of ablationLate Latin ablātiō ablātiōn- from Latin ablātus past participle of auferre to carry away ab- away ; see ab- 1. lātus carried ; see telə- in Indo-European roots.