A system is said to be stable if a finite input always produces a finite output. For example, systems with positive feedback usually aren't stable.

Sta*bil"i*ty (?), n. [L. stabilitas; cf. F. stabilit'e. See Stable, a.]


The state or quality of being stable, or firm; steadiness; firmness; strength to stand without being moved or overthrown; as, the stability of a structure; the stability of a throne or a constitution.


Steadiness or firmness of character, firmness of resolution or purpose; the quality opposite to fickleness, irresolution, or inconstancy; constancy; steadfastness; as, a man of little stability, or of unusual stability.


Fixedness; -- as opposed to fluidity.

Since fluidness and stability are contary qualities. Boyle.

Syn. -- Steadiness; stableness; constancy; immovability; firmness.


© Webster 1913.

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