| erosion | | |
| n. (process) | 1. eating away, eroding, erosion, wearing, wearing away | (geology) the mechanical process of wearing or grinding something down (as by particles washing over it). |
| ~ geology | a science that deals with the history of the earth as recorded in rocks. |
| ~ chatter mark | marks on a glaciated rock caused by the movement of a glacier. |
| ~ ablation | the erosive process that reduces the size of glaciers. |
| ~ attrition, corrasion, detrition, abrasion | erosion by friction. |
| ~ beach erosion | the erosion of beaches. |
| ~ geologic process, geological process | (geology) a natural process whereby geological features are modified. |
| ~ deflation | (geology) the erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind.; "a constant deflation of the desert landscape" |
| ~ planation | the process of erosion whereby a level surface is produced. |
| ~ soil erosion | the washing away of soil by the flow of water. |
| n. (state) | 2. erosion | condition in which the earth's surface is worn away by the action of water and wind. |
| ~ environmental condition | the state of the environment. |
| n. (process) | 3. erosion | a gradual decline of something.; "after the accounting scandal there was an erosion of confidence in the auditors" |
| ~ decline, diminution | change toward something smaller or lower. |
| n. (process) | 4. corroding, corrosion, erosion | erosion by chemical action. |
| ~ chemical action, chemical change, chemical process | (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved. |
| ~ pitting, indentation, roughness | the formation of small pits in a surface as a consequence of corrosion. |
| ~ rusting, rust | the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water. |
| wear away | | |
| v. (contact) | 1. wear away, whittle away, whittle down | cut away in small pieces. |
| ~ damage | inflict damage upon.; "The snow damaged the roof"; "She damaged the car when she hit the tree" |
| v. (contact) | 2. wear away, wear off | diminish, as by friction.; "Erosion wore away the surface" |
| ~ remove, take away, withdraw, take | remove something concrete, as by lifting, pushing, or taking off, or remove something abstract.; "remove a threat"; "remove a wrapper"; "Remove the dirty dishes from the table"; "take the gun from your pocket"; "This machine withdraws heat from the environment" |
| ~ abrade, abrase, corrade, rub down, rub off | wear away. |
| v. (change) | 3. eat at, erode, gnaw, gnaw at, wear away | become ground down or deteriorate.; "Her confidence eroded" |
| ~ decay, dilapidate, crumble | fall into decay or ruin.; "The unoccupied house started to decay" |
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