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1The surgical removal of body tissue.
- ‘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.’
- ‘With newer and safer techniques available, hysteroscopic resection procedures for endometrial ablation are being performed less frequently.’
- ‘Treatment by surgical excision or physical ablation of the excess tissue may improve cosmetic appearance.’
- ‘Treatment for menorrhagia may include hormone therapy, endometrial curettage, endometrial ablation, or hysterectomy.’
- ‘Endometrial ablation is the first surgical advance in the treatment of menorrhagia since hysterectomy.’
- ‘All seven patients with diverticula of the CS who were not treated with catheter or surgical ablation eventually died.’
- ‘Endometrial ablation is a procedure that offers an effective surgical treatment option for women with menorrhagia who want to avoid hysterectomy.’
- ‘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.’
2The removal of snow and ice by melting or evaporation, typically from a glacier or iceberg.
- ‘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.’
- ‘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.’
- 2.1 The erosion of rock, typically by wind action.
- ‘It is on actively moving glacier ice covered by rock debris called ablation or surface moraine.’
- ‘Some slopes are steep and sharply incise ancient surfaces of ablation, as is the case south of PA2 and PA4.’
- ‘The stream loads will likely experience almost continual aggradation and ablation.’
- ‘Potassic minerals were degassed with an argon laser probe using step heating or direct ablation of grains on thin rock sections.’
- 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.’
- ‘Deceleration of meteorites begins high in the atmosphere where the surface of the incoming body heats up to incandescence causing melting and ablation.’
- ‘This thing came screaming down through the Martian atmosphere and it underwent some ablation.’
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).
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