| 释义 |
ero·sion
\ə̇ˈrōzhən, ēˈ-\ noun
(-s)
Etymology: Middle French, from Latin erosion-, erosio, from erosus (past participle of erodere to erode) + -ion-, -io -ion — more at erode
1.
a.
(1) : the superficial destruction of a surface area of tissue (as mucous membrane) by inflammation, ulceration, or trauma
< erosion of the uterine cervix >
< gizzard erosion in chicks >
(2) : progressive loss of the hard substance of a tooth
b. : corrosion 1a
2.
a. : the general process whereby materials of the earth's crust are worn away and removed by natural agencies including weathering, solution, corrasion, and transportation; specifically : land destruction and simultaneous removal of particles (as of soil) by running water, waves and currents, moving ice, or wind
< stream erosion >
< glacial erosion >
— compare denudation
b. : surface destruction of a metal or refractory material effected by the abrasive or the corrosive and abrasive action of a moving liquid or gas and often accelerated by solid particles in suspension
< range errors due to gun erosion >
< severe erosion of the furnace lining caused by the scouring motion of molten slag >
c. : even disintegration of a paint surface caused by chalking and washing away
3. : an instance or product of erosion
< a circular erosion on the skin half an inch in diameter >
< a canyon with red tower-shaped erosions >
4. : progressive impairment or destruction as if by eating or wearing away (as of resources, strength, or effectiveness) : depletion, deterioration
< erosion of real earnings by inflation >
< the great ideals of liberty and equality are preserved against … the erosion of small encroachments — B.N.Cardozo > |