the GNU version of the Collaborative International Dictionary of English
n. Want of tone; weakness of the system, or of any organ, especially of such as are contractile.
The Century Dictionary and Cyclopedia
n. In pathology, a want of tone; defect of muscular power; weakness of any organ, particularly of one that is contractile; debility.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. lack of normal muscular tension or tonus
Word Usage
"The risk of bleeding from uterine atony is minimized by coordination between the surgeon and anesthesiologist to decrease the concentration of inhalation anesthetic and to administer oxytocin to contract the uterus before cutting the umbilical cord."