Lacking muscle tone or showing a loss of normal muscle tension and strength.
From Greek a- (without) + mys (muscle) + tonikos (relating to tension or tone). The prefix combination literally means 'without muscle tone' and was formed in medical terminology to describe muscular conditions.
Doctors use this term for conditions where muscles just kind of give up maintaining their normal tightness—it's like your muscles forgot how to stay in shape, which can happen with certain neurological diseases or prolonged immobility.
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