Ablation meaning

ă-blāshən
Surgical excision or amputation of a body part or tissue.
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The erosive processes by which a glacier is reduced.
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Surgical excision or amputation of a body part or tissue.
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The wearing away or destruction of the outer or forward surface of an object, such as a meteorite or a spacecraft, as it moves very rapidly through the atmosphere. The friction of the air striking the object heats and often melts or burns its outer layers. Spacecraft and missiles are often equipped with heat shields designed to wear away by ablation in order to prevent heat from building up in structurally important parts.
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The process by which snow and ice are removed from a glacier or other mass of ice. Ablation typically occurs through melting, sublimation, wind erosion, or calving. &diamf3; The ablation zone is the area of a glacier that has the lowest elevation, where annual water loss is greater than the annual accumulation of snow.
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(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.]
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(sciences) The progressive removal of material by any of a variety of processes such as vaporization under heat or chipping. [Mid 20th century.]
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(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 20th century.]
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Origin of ablation

  • Late Latin ablātiō ablātiōn- from Latin ablātus past participle of auferre to carry away ab- away ab–1 lātus carried telə- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle French and Latin ablātiō (“a taking away"), from ablātus (“removed"), the perfect passive participle of auferō (“carry away"). Compare French ablation.

    From Wiktionary