atony, atonies, atonias 1. Lack of tone or energy; muscular weakness; especially, in a contractile organ. 2. Lack of normal muscle tone. 3. Lack of normal tone or tension; flaccidity. Found on http://www.wordinfo.info/words/index/info/view_unit/2161/
1) Muscular weaknesses 
atony, atonies, atonias 1. Lack of tone or energy; muscular weakness; especially, in a contractile organ. 2. Lack of normal muscle tone. 3. Lack of normal tone or tension; flaccidity.