ablation(redirected from Ablative material)
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Related to Ablative material: ablation therapy
1. Surgical excision or amputation of a body part or tissue.
2. The erosive processes by which a glacier is reduced.
a. The dissipation of heat generated by atmospheric friction, especially in the atmospheric reentry of a spacecraft or missile, by means of a melting heat shield.
b. The reduction or removal of heat-protective surface material by aerodynamic friction, as from a heat shield.
[Late Latin ablātiō, ablātiōn-, from Latin ablātus, past participle of auferre, to carry away : ab-, away; see ab-1 + lātus, carried; see telə- in Indo-European roots.]
1. (Surgery) the surgical removal of an organ, structure, or part
2. (Aeronautics) the melting or wearing away of an expendable part, such as the heat shield of a space re-entry vehicle on passing through the earth's atmosphere
3. (Geological Science) the wearing away of a rock or glacier
[C15: from Late Latin ablatiōn-, from Latin auferre to carry away, remove]
1. the act or process of ablating.
2. the removal of organs, abnormal growths, or harmful substances from the body by mechanical means, as by surgery.
3. the erosion of the protective outer surface (ablator) of a spacecraft or missile due to heat during reentry through the atmosphere.
[1570–80; < Late Latin]
1. 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.
2. The process by which snow and ice are removed from a glacier or other mass of ice. Ablation typically occurs through melting, sublimation, or wind erosion.
Medicine. removal of part of the body by surgery.See also: Surgery
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|Noun||1.||ablation - surgical removal of a body part or tissue|
adenoidectomy - surgical removal of the adenoids; commonly performed along with tonsillectomy
cholecystectomy - surgical removal of the gall bladder (usually for relief of gallstone pain)
surgical operation, surgical procedure, surgical process, surgery, operation - a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
embolectomy - surgical removal of an embolus (usually from an artery)
endarterectomy - surgical removal of the inner lining of an artery that is clogged with atherosclerosis
enervation - surgical removal of a nerve
hypophysectomy - surgical removal of the pituitary gland
hysterectomy - surgical removal of the uterus
laminectomy - surgical removal of the bony arches on one or more vertebrae
laryngectomy - surgical removal of part or all of the larynx (usually to treat cancer of the larynx)
lithotomy - surgical removal of a stone (calculus)
lobectomy - surgical removal of a lobe from any organ of the body (as the lung or brain)
lumpectomy - surgical removal of a tumor without removing much of the surrounding tissue or lymph nodes; performed in some cases of breast cancer
mastectomy - surgical removal of a breast to remove a malignant tumor
mastoidectomy - surgical removal of some or all of the mastoid process
meniscectomy - surgical removal of the meniscus of the knee
nephrectomy - surgical removal of a kidney
neurectomy - surgical removal of all or part of a nerve
oophorosalpingectomy - surgical removal of one or both ovaries and the corresponding Fallopian tubes
ophthalmectomy - surgical removal of an eye
pancreatectomy - surgical removal of part or all of the pancreas
pneumonectomy - surgical removal of a lung (usually to treat lung cancer)
prostatectomy - surgical removal of part or all of the prostate gland
salpingectomy - surgical removal of one or both Fallopian tubes
septectomy - surgical removal of all or part of a septum (especially the nasal septum or atrial septum)
sigmoidectomy - surgical removal of part or all of the sigmoid colon (usually to remove a malignant tumor)
splenectomy - surgical removal of the spleen
stapedectomy - surgical removal of the stapes of the middle ear
sympathectomy - surgical interruption of a nerve pathway in the sympathetic nervous system
thrombectomy - surgical removal of a blood clot (thrombus) from a blood vessel
thyroidectomy - surgical removal of the thyroid gland
tonsillectomy - surgical removal of the palatine tonsils; commonly performed along with adenoidectomy
vasectomy - surgical procedure that removes all or part of the vas deferens (usually as a means of sterilization); is sometimes reversible
vulvectomy - surgical removal of part or all of the vulva
|2.||ablation - the erosive process that reduces the size of glaciers|