Definitions for "Instability"
The quality or condition of being unstable; lack of stability, firmness, or steadiness; liability to give way or to fail; insecurity; precariousness; as, the instability of a building.
Lack of determination of fixedness; inconstancy; fickleness; mutability; changeableness; as, instability of character, temper, custom, etc.
The atmosphere is in an unstable state when a displaced parcel of air continues to move either up or down, away from its initial location. Instability is necessary for convection to occur, and for the formation of thunderstorms.
A term indicating abnormally increased movement of a vertebra in relation to its neighbour immediately above or below.
A term used to describe an abnormal increase in the movement of one vertebrae to another.
When vertebrae move beyond their normal range of motion.
Refers to a displayed number which continues to vary randomly or sporadically, rather than progressively. See "drift."
a state of disequilibrium (as may occur in cases of inner ear disease)
A clinical syndrome which occurs when shoulders are loose enough to produce symptoms.
The chemical processes that result in a degradation or change in the active ingredients, including hydrolysis, oxidation, reduction, and photo degradation reactions.
Unnaturally large fluctuations in a pattern.
Keywords:  hunt, fan, pulse, static, peak
The point of operation at which a fan or system will “hunt” or pulse. Common in FC fans and some other fan types where the point of operation is left of the peak of the static-pressure curve.
Generation of unwanted and sustained oscillations.
Inability to carry further load due to loss of stiffness (Instability is largely independent of strength.)
The characteristic of a compound, mixture, or solution which would allow it to change its form or chemical structure.