noun : EROSION
Source: WordNet 3.1
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1. (
) (geology) the mechanical process of wearing or grinding something down (as by particles washing over it) ;
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2. (
) condition in which the earth's surface is worn away by the action of water and wind ;
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3. (
) a gradual decline of something; "after the accounting scandal there was an erosion of confidence in the auditors" ;
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4. (
) erosion by chemical action ;
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