Usually means: Liable to change or fail.
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We found 36 dictionaries that define the word unstable:

General (26 matching dictionaries)
  1. unstable: Merriam-Webster.com
  2. unstable: Oxford Learner's Dictionaries
  3. unstable: American Heritage Dictionary of the English Language
  4. unstable: Collins English Dictionary
  5. unstable: Vocabulary.com
  6. unstable: Wordnik
  7. unstable: Cambridge Advanced Learner's Dictionary
  8. unstable: Wiktionary
  9. unstable: Webster's New World College Dictionary, 4th Ed.
  10. unstable: The Wordsmyth English Dictionary-Thesaurus
  11. unstable: Infoplease Dictionary
  12. unstable: Dictionary.com
  13. unstable: Online Etymology Dictionary
  14. unstable: Cambridge Essential American English Dictionary
  15. Unstable (album), Unstable (song): Wikipedia, the Free Encyclopedia
  16. Unstable: Online Plain Text English Dictionary
  17. unstable: Webster's Revised Unabridged, 1913 Edition
  18. unstable: Rhymezone
  19. Unstable: AllWords.com Multi-Lingual Dictionary
  20. unstable: Webster's 1828 Dictionary
  21. unstable: Free Dictionary
  22. unstable: Mnemonic Dictionary
  23. unstable: Dictionary/thesaurus
  24. Unstable: Wordnik

Business (3 matching dictionaries)
  1. Construction Term Glossary (No longer online)
  2. unstable: Legal dictionary
  3. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)
  1. Unstable (Debian), unstable: Encyclopedia

Medicine (1 matching dictionary)
  1. unstable: Medical dictionary

Science (4 matching dictionaries)
  1. unstable: PHYSICAL ORGANIC CHEMISTRY
  2. The Computational Beauty of Nature (No longer online)
  3. unstable, unstable, unstable: PlanetMath Encyclopedia
  4. Accelerator Glossary (No longer online)

Slang (1 matching dictionary)
  1. unstable: Urban Dictionary

(Note: See unstableness as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
adjective:  Not stable.
adjective:  Having a strong tendency to change.
adjective:  Fluctuating; not constant.
adjective:  Fickle.
adjective:  Unpredictable.
adjective:  (chemistry) Readily decomposable.
adjective:  (physics) Radioactive, especially with a short half-life.
verb:  (transitive) To release (an animal) from a stable.

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    neon green,     electric blue,     hot pink,     lime green,     vivid orange, more...



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