instability

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instability

 [in-stah-bil´ĭ-te]
lack of constancy; excessive likelihood of change.
detrusor instability the occurrence during bladder filling of contractions that compromise capacity or produce urinary leakage.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·sta·bil·i·ty

(in'stă-bil'i-tē),
The state of being unstable, or lacking stability.
Farlex Partner Medical Dictionary © Farlex 2012

instability

Lacking complete stability. See Hemodynamic instability Orthopedics The inability to maintain a reduced joint. See Functional instability, Mechanical instability, Multidirectional instability, Shoulder instability.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

in·sta·bil·i·ty

(in'stă-bil'i-tē)
1. The state of being unstable, or lacking stability.
2. The abnormal tendency of a joint to subluxate or dislocate with normal activities and stresses.
See also: laxity
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
They found that this gas-channeling mechanism also generates other gravitational instabilities, including the cascading branching of a descending granular droplet.
Monkewitz, "Absolute and convective instabilities in free shear layers," Journal of Fluid Mechanics, vol.
The penalty force is added to (2) to control instabilities, and an artificial damping term is added to obtain the quasistatic solutions of (2).
The objective of this investigation is to systematically analyze the parametric instabilities induced by two different speed fluctuations and present a new way to control the parametric instability by adjusting speed fluctuation parameters.
The difference in speed and energies between the two creates the very similar KH instabilities that we can observe in clouds.
Bubble instabilities were experimentally measured using the in-line scanning camera system developed by Laffague et al.
There are cases where a system resonance can occur that will cause non-deterministic system behavior resulting in sporadic starvation or access instabilities. These cases occur due to system resonance based on topology, number of targets, number of initiators, block size, read/write ratio, random/sequential ratio and other factors.
In some preliminary investigations, the authors found that interfacial instabilities can occur in multilayer flows of the same polymer melt at the same temperature.
Aggregative indicators, such as the unemployment rate and capacity utilization, may be suggestive of emerging inflation and asset price instabilities. But they cannot be determinative.
They cover the contract- line instabilities of driven liquid films; the numerical simulation of three-dimensional bubble oscillations; instability and wave radiation in stratified shear flow; basic equations and mathematical techniques to study the instability of viscous and inviscid flows; stability, transition, and turbulence in rotating cavities; and hydrodynamic instability.
Three different instabilities were predicted: two axisymmetric modes and one nonaxisymmetric mode.