Pronunciation: (vol'u-tl, -til or, esp. Brit., -tīl"),[key] —adj. 1. evaporating rapidly; passing off readily in the form of vapor: Acetone is a volatile solvent. 2. tending or threatening to break out into open violence; explosive: a volatile political situation. 3. changeable; mercurial; flighty: a volatile disposition. 4. (of prices, values, etc.) tending to fluctuate sharply and regularly: volatile market conditions. 5. fleeting; transient: volatile beauty. 6. Computers.of or pertaining to storage that does not retain data when electrical power is turned off or fails.
7. able to fly or flying.