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ablation

From Wiktionary, the free dictionary

English

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Etymology

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Etymology tree
Late Latin ablātiōder.
Middle English albacioun
English ablation

    From Late Middle English ablacioun (“removal”), from Late Latin ablātiō (“a taking away”), from auferō (“to take away, carry off, withdraw, remove”) +‎ -tiō (“-tion”, nominal suffix). Doublet of ablatio. Compare French ablation. By surface analysis, ablat(e) +‎ -ion.

    Pronunciation

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    • enPR: ə-blā'-shən, ăb-lā'-shən IPA(key): /əˈbleɪ.ʃn̩/, /æbˈleɪ.ʃn̩/
    • Audio (US):(file)
    • Audio (Canada):(file)
    • Rhymes: -eɪʃən

    Noun

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    ablation (countable and uncountable, plural ablations)

    1. (obsolete) A carrying or taking away; removal. [First attested around 1350 to 1470.][1]
    3. (surgery) 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]
      2. (artificial intelligence) The removal of a component of an AI system.
    4. (sciences) The progressive removal of material by any of a variety of processes such as melting or vaporization under heat or chipping. [Mid 20th century.][1]
      Hyponym: constitutive ablation
      2. (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 or mass wasting. [from 20th c.][1]
        • 2026 June 27, “Snow and ice on Swiss glaciers melting at alarming rate amid heatwave, expert says”, in The Guardian‎[1], sourced from Agence France-Presse, →ISSN, archived from the original on 27 June 2026:
          “We’re just seeing enormous ablation, ice melt rates and snow melt rates all over the Alps,” Glamos network chief Matthias Huss told AFP on Friday, as multiple Swiss weather stations registered new all-time records.
      4. (meteorology) The depletion of surface snow and ice from a spacecraft or meteorite through melting and evaporation caused by aerodynamic heating.

    Derived terms

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    Translations

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    The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
    Translations to be checked

    References

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    1. ↑ 1.0 1.1 1.2 1.3 Lesley Brown, editor-in-chief, William R. Trumble and Angus Stevenson, editors (2002), “ablation”, in The Shorter Oxford English Dictionary on Historical Principles, 5th edition, Oxford; New York, N.Y.: Oxford University Press, →ISBN, page 5.

    Further reading

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    Danish

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    Noun

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    ablation c (singular definite ablationen, plural indefinite ablationer)

    1. (geology, medicine) ablation

    Declension

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    Declension of ablation
    common
    gender     		singular plural
    indefinite definite indefinite definite
    nominative ablation ablationen ablationer ablationerne
    genitive ablations ablationens ablationers ablationernes

    Further reading

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    French

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    Pronunciation

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    Noun

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    ablation f (plural ablations)

    1. the often forceful removal (physical or otherwise) or abolition of something
      • 2008 April 25, Martine Chouinard, “Brebis égarée”, in Le Devoir‎[2], archived from the original on 19 June 2008:
        […] se contentant d'annoncer que l'ablation des nouvelles permettra de voguer vers «la production d'émissions culturelles et de divertissement de qualité».
        merely announcing that the elimination of news programming [on tv channel TQS] will allow it to focus on "the production of quality entertainment and cultural programming"
    2. (medicine) ablation
    3. (sciences) ablation

    Descendants

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    • → Dutch: ablatie

    Further reading

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