Medical Definition of Erosion

Erosion: An erosion is an eating away of a surface. ("Erodere" in Latin means to eat out.)

For example, a skin erosion is a loss of part or all of the epidermis (the outer layer) leaving a denuded surface.

For another example, tooth erosion is a gradual loss of the normally hard surface of the tooth because of chemical processes.

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Last Editorial Review: 5/13/2016

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