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Relaxation, flaccidity, or lack of tone or tension.
[G. atonia, languor]
Farlex Partner Medical Dictionary © Farlex 2012
atonicity(ā″tō-nis′ĭt-ē) [ ¹an- + tonicity]
The state of being atonic or without tone, esp. muscle tone; atony.
Medical Dictionary, © 2009 Farlex and Partners