volatile

adj. evaporating easily; rapidly changing; fickle

n. liquid that quickly vaporizes at relatively low temperatures (i.e. gasoline, paint thinner, etc.)

Volatile means something changing or changeable. It can refer to: In general:Volatility, a measure of instabilityIn economics:Volatility (finance), a measure of the risk in a financial instrumentIn chemistry:Volatility (chemistry), a measure of the tendency of a substance to vaporize. It has also been defined as a measure of how readily a substance vaporizes.Volatiles, a group of compounds with low boiling points that are associated with a planet's or moon's crust and/or atmosphereVolatile liquids, liquidlkdfjaldfjal;difj with a high vapor pressure or low boiling pointVolatile organic compounds, organic compounds that can evaporate at normal temperature and pressure, and are often regulated by governmentsVolatile anaesthetics, a class of anaesthetics which evaporate easilyVolatile substance abuse, the abuse of household inhalants containing volatile compoundsVolatile oil, also known as essential oil, an oil derived from plants with aromatic compounds used in cosmetics and flavoringVolatile acidity, a term used in winemaking to indicate an unacceptably high level of acid or vinegar and baking soda.
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Volatile /vol·a·tile/ evaporating rapidly; vaporizing readily. vol·a·tile adj. 1. Evaporating readily at normal temperatures and pressures. 2. [more]Volatile - Community and Resources

Noun
1. a volatile substance; a substance that changes readily from solid or liquid to a vapor; "it was heated to evaporate the volatiles"
(hypernym) substance, matter
Adjective
1. evaporating readily at normal temperatures and pressures; "volatile oils"; "volatile solvents"
(antonym) nonvolatile, nonvolatilizable, nonvolatilisable
(similar) evaporable, vaporific, vaporizable, volatilizable, volatilisable
(see-also) inconstant
(classification) chemistry, chemical science
2. liable to lead to sudden change or violence; "an explosive issue"; "a volatile situation with troops and rioters eager for a confrontation"
(synonym) explosive
(similar) unstable
3. marked by erratic changeableness in affections or attachments; "fickle friends"; "a flirt's volatile affections"
(synonym) fickle
(similar) inconstant
4. tending to vary often or widely; "volatile stocks"; "volatile emotions"
(similar) changeable, changeful

adj. volatile, evaporating easily