Definition of ablation in English:

ablation

noun

  • 1The surgical removal of body tissue.

    • ‘All seven patients with diverticula of the CS who were not treated with catheter or surgical ablation eventually died.’
    • ‘Radiofrequency ablation is the targeted cautery of cardiac tissue by local application of radiofrequency energy.’
    • ‘Many surgeons, who require precision in their tissue ablation, prefer the pulsed mode of operation.’
    • ‘With newer and safer techniques available, hysteroscopic resection procedures for endometrial ablation are being performed less frequently.’
    • ‘Endometrial ablation is a procedure that offers an effective surgical treatment option for women with menorrhagia who want to avoid hysterectomy.’
    • ‘Endometrial ablation is the first surgical advance in the treatment of menorrhagia since hysterectomy.’
    • ‘Treatment for menorrhagia may include hormone therapy, endometrial curettage, endometrial ablation, or hysterectomy.’
    • ‘Most patients having laser ciliary body ablation need to continue drug treatment.’
    • ‘Physicians should discuss risks and benefits of all options, including endometrial ablation and hysterectomy, with each patient.’
    • ‘Treatment by surgical excision or physical ablation of the excess tissue may improve cosmetic appearance.’
  • 2The removal of snow and ice by melting or evaporation, typically from a glacier or iceberg.

    • ‘Thermodynamic processes control the growth and ablation of ice.’
    • ‘Conduction of heat to the glacier surface from the air and condensation of water vapour are important variables causing ablation.’
    • ‘Searches were delayed until June, when snow ablation was 90% complete.’
    • ‘It provides an estimate of how much precipitation or temperature change must be invoked to explain the current net ablation of the glacier.’
    • ‘A glacier forms whenever the accumulation of snow/ice exceeds ablation over a sustained period of time.’
    1. 2.1 The erosion of rock, typically by wind action.
      • ‘The stream loads will likely experience almost continual aggradation and ablation.’
      • ‘It is on actively moving glacier ice covered by rock debris called ablation or surface moraine.’
      • ‘Potassic minerals were degassed with an argon laser probe using step heating or direct ablation of grains on thin rock sections.’
      • ‘Some slopes are steep and sharply incise ancient surfaces of ablation, as is the case south of PA2 and PA4.’
    2. 2.2 The loss of surface material from a spacecraft or meteorite through evaporation or melting caused by friction with the atmosphere.
      • ‘The most effective thermal protection method for single re-entry vehicles was ablation.’
      • ‘This thing came screaming down through the Martian atmosphere and it underwent some ablation.’
      • ‘Deceleration of meteorites begins high in the atmosphere where the surface of the incoming body heats up to incandescence causing melting and ablation.’

Origin

Late Middle English (in the general sense ‘taking away, removal’): from late Latin ablatio(n-), from Latin ablat- ‘taken away’, from ab- ‘away’ + lat- ‘carried’ (from the verb ferre).

Pronunciation

ablation

/əˈbleɪʃən//əˈblāSHən/