1. (

• erosion ,
• eroding ,
• eating_away ,
• wearing ,
• wearing_away

) (geology) the mechanical process of wearing or grinding something down (as by particles washing over it) ;

2. (

• erosion

) condition in which the earth's surface is worn away by the action of water and wind ;

3. (

• erosion ,

) a gradual decline of something; "after the accounting scandal there was an erosion of confidence in the auditors" ;

4. (

• corrosion ,
• corroding ,
• erosion ,

) erosion by chemical action ;