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constriction of the middle portion of a hollow organ, such as the stomach or the gravid uterus.
Farlex Partner Medical Dictionary © Farlex 2012
hour·glass con·trac·tion(owr'glas kŏn-trak'shŭn)
Constriction of the middle portion of a hollow organ, such as the stomach or the gravid uterus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
An excessive, irregular contraction of an organ at its center.See: ectasia
See also: contraction
Medical Dictionary, © 2009 Farlex and Partners