GNU Collaborative International Dictionary of English
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Found one definition
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Ablation (>), n. [L. ablatio, fr. ablatus p. p. of auferre to carry away; ab + latus, p. p. of ferre carry: cf. F. ablation. See Tolerate.]
1. A carrying or taking away; removal. Jer. Taylor.
[1913 Webster]
2. (Med.) Extirpation. Dunglison. AS
[1913 Webster]
3. (Med.) Removing or destroying of a body tissue, especially by a surgical procedure. Dorland.
[AS]
4. (Geol.) Wearing away; superficial waste, as of glacial ice or snow. Tyndall.
[1913 Webster]
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”.
[PJC]