Having undergone atrophy; wasted away, shriveled, or degenerated due to lack of use or nourishment.
From 'atrophy' (Greek 'a-' without + 'trophe' nourishment) with past participle suffix '-ed'. This common form describes the result of tissue degeneration over time.
An astronaut's muscles get 'atrophied' in space because there's no gravity—the body literally stops feeding tissues it thinks aren't needed, which is why they have to work out constantly in orbit!
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