Erosion - Definition
erosion
n 1: (geology) the mechanical process of wearing or grinding
something down (as by particles washing over it) [syn:
erosion, eroding, eating away, wearing, wearing
away]
2: condition in which the earth's surface is worn away by the
action of water and wind
3: a gradual decline of something; "after the accounting scandal
there was an erosion of confidence in the auditors"
4: erosion by chemical action [syn: corrosion, corroding,
erosion]