noun, plural stabilities.
the state or quality of being stable.
firmness in position.
continuance without change; permanence.
Chemistry. resistance or the degree of resistance to chemical change or disintegration.
resistance to change, especially sudden change or deterioration: The stability of the economy encourages investment.
steadfastness; constancy, as of character or purpose: The job calls for a great deal of emotional stability.
Aeronautics. the ability of an aircraft to return to its original flying position when abruptly displaced.
Roman Catholic Church. a vow taken by a Benedictine monk, binding him to residence for life in the same monastery in which he made the vow.

1400–50; < Latin stabilitās, equivalent to stabili(s) stabile + -tās- -ty; replacing late Middle English stablete < Old French < Latin, as above

nonstability, noun
overstability, noun
self-stability, noun

6. steadiness, strength, soundness, poise, solidity, balance.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
stability (stəˈbɪlɪtɪ)
n , pl -ties
1.  the quality of being stable
2.  the ability of an aircraft to resume its original flight path after inadvertent displacement
3.  meteorol
 a.  the condition of an air or water mass characterized by no upward movement
 b.  the degree of susceptibility of an air mass to disturbance by convection currents
4.  ecology the ability of an ecosystem to resist change
5.  electrical engineering the ability of an electrical circuit to cope with changes in the operational conditions
6.  a vow taken by every Benedictine monk attaching him perpetually to the monastery where he is professed

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1300, "resolute, firm, steadfast" (of persons), from O.Fr. stableté, from L. stabilitatem (nom. stabilitas) "firmness, steadfastness," from stabilis "steadfast, firm" (see stable (adj.)). In physical sense, "difficult to overthrow," it is recorded from early 15c.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

stability sta·bil·i·ty (stə-bĭl'ĭ-tē)
The condition of being stable or resistant to change.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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