instability (redirected from detrusor instability)

instability

1. tendency to variable or unpredictable behaviour

2. Physics a fast growing disturbance or wave in a plasma

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instability [‚in·stə′bil·əd·ē]

(control systems)

A condition of a control system in which excessive positive feedback causes persistent, unwanted oscillations in the output of the system.

(physics)

A property of the steady state of a system such that certain disturbances or perturbations introduced into the steady state will increase in magnitude, the maximum perturbation amplitude always remaining larger than the initial amplitude.

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instability

In a structure, the sudden loss of stiffness that limits its load-carrying capability, and in some cases results in the structure’s failure.