gradual wearing away

See: erosion
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References in periodicals archive ?
The exact cause is not fully understood, although it is generally accepted that the gradual wearing away of joint cartilage tissue is a major contributing factor.
MS is caused by the gradual wearing away of the protective coating (myelin) that surrounds the nerve fibres.
Osteoarthritis, also called wear-and-tear arthritis, involves gradual wearing away of the smooth slippery cartilage that lines a joint.