American English

Definition of volatile adjective from the Oxford Advanced American Dictionary



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  1. 1(often disapproving) (of a person or their moods) changing easily from one mood to another a highly volatile personality
  2. 2(of a situation) likely to change suddenly; easily becoming dangerous synonym unstable a highly volatile situation from which riots might develop a volatile exchange rate
  3. 3(technology) (of a substance) that changes easily into a gas Gas is a volatile substance.
noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: volatile

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