Noun
Want of tone; weakness of the system, or of any organ, especially of such as are contractile.
Source: Webster's dictionaryHorses and other herbivorous ungulates can sleep while standing, but must necessarily lie down for REM sleep (which causes muscular atony) for short periods. Source: Internet
Patients who have recently undergone an intact D&E are monitored for signs of coagulopathy, uterine perforation, uterine atony, retained tissue, or hemorrhage. Source: Internet
In cases of uterine atony and corresponding blood loss, methergine or misoprostol can be given to encourage uterine contraction and achieve hemostasis. Source: Internet