Atrophy is a process by which parts of the body, such as muscles and organs, lessen in size or weaken in strength due to internal nerve damage, poor nutrition, or aging.
(of an organ or body part) diminished in size or strength as a result of disease or injury or lack of use
muscles’ lessening in size or weakening in strength
any of several hereditary diseases of the muscular system characterized by weakness and wasting of skeletal muscles
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