Having the power of being readily converted into gas or vapor. Sometimes applied, in chemistry, to those constituents, or that portion, of a substance which is driven off by heating at a specified temperature.Flying, or able to fly; having the power of flight; volant; volitant.Having the quality of taking flight or passing off by spontaneous evaporation; evaporating rapidly; becoming diffused more or less freely in the atmosphere.Lively; brisk; gay; full of spirit; airy; hence, fickle; apt to change: as, a volatile disposition.Transient; not permanent; not lasting.n. A winged creature, as a bird or butterfly.n. Wild fowl collectively.