| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024ab•la•tion (a blā′shən),USA pronunciation n. - Surgerythe removal, esp. of organs, abnormal growths, or harmful substances, from the body by mechanical means, as by surgery.
- Geology, Meteorologythe reduction in volume of glacial ice, snow, or névé by the combined processes of melting, evaporation, and calving. Cf. alimentation (def. 3).
- Aerospaceerosion of the protective outer surface (ablator) of a spacecraft or missile due to the aerodynamic heating caused by travel at hypersonic speed during reentry through the atmosphere.
- Late Latin ablātiōn- (stem of ablātiō). See ablate, -ion
- 1570–80
Collins Concise English Dictionary © HarperCollins Publishers:: ablation /æbˈleɪʃən/ n - the surgical removal of an organ, structure, or part
- 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
- the wearing away of a rock or glacier
Etymology: 15th Century: from Late Latin ablatiōn-, from Latin auferre to carry away, remove |