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melting ablation

См. также в других словарях:

  • Ablation — is defined as the removal of material from the surface of an object by vaporization, chipping, or other erosive processes. The term occurs in space physics associated with atmospheric reentry, in glaciology, medicine and passive fire… …   Wikipedia

  • ablation shield — ablation shield, a type of heat shield that uses up heat by melting and vaporizing. The air stream carries the molten particles and the hot gas vapor away from the spacecraft …   Useful english dictionary

  • Ablation zone — On a glacier, the ablation zone, zone of ablation or zone of wastage is the area in which annual loss of snow through melting, evaporation, iceberg calving and sublimation exceeds annual gain of snow and ice on the surface. Of these, melting is… …   Wikipedia

  • ablation — n. 1 the surgical removal of body tissue. 2 Geol. the wasting or erosion of a glacier, iceberg, or rock by melting or the action of water. 3 Astronaut. the evaporation or melting of part of the outer surface of a spacecraft through heating by… …   Useful english dictionary

  • ablation — /a blay sheuhn/, n. 1. the removal, esp. of organs, abnormal growths, or harmful substances, from the body by mechanical means, as by surgery. 2. the reduction in volume of glacial ice, snow, or névé by the combined processes of melting,… …   Universalium

  • ablation — noun Date: 15th century the process of ablating: as a. surgical removal b. loss of a part (as ice from a glacier or the outside of a nose cone) by melting or vaporization …   New Collegiate Dictionary

  • ablation —   the net loss of water from a glacier through melting, calving, evaporation, sublimation or wind transport. Is dominant to accumulation over space and time when the glacier enters warmer conditions …   Geography glossary

  • ablation — æ bleɪʃn n. surgical removal, excision; reduction of the mass of a glacier through the melting and evaporation of snow and ice; burning away of a spacecraft s protective covering during atmospheric reentry …   English contemporary dictionary

  • ablation — [ə bleɪʃ(ə)n] noun 1》 the loss of solid material (especially ice) by melting or evaporation.     ↘the erosion of rock by wind action. 2》 the surgical removal of body tissue. Derivatives ablate verb Origin ME: from late L. ablatio(n ), from L.… …   English new terms dictionary

  • ablation — /əˈbleɪʃən / (say uh blayshuhn) noun 1. Medicine removal, especially of organs, abnormal growths, or harmful substances from the body by mechanical, physical or chemical means, as surgery or irradiation. 2. Physics erosion of a solid body by a… …  

  • ablation —   n. surgical removal; wearing away of rock or glacier; melting away of expendable part of spaceship or rocket …   Dictionary of difficult words

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