[1] : The Collaborative International Dictionary of English v.0.48

volatile \vol"atile\, a. f. volatil, l. volatilis, fr. volare
   to fly, perhaps akin to velox swift, e. velocity. cf.
   volley.
   1. passing through the air on wings, or by the buoyant force
      of the atmosphere; flying; having the power to fly. obs.
      1913 webster

   2. capable of wasting away, or of easily passing into the
      aeriform state; subject to evaporation.
      1913 webster

   note: substances which affect the smell with pungent or
         fragrant odors, as musk, hartshorn, and essential oils,
         are called volatile substances, because they waste away
         on exposure to the atmosphere. alcohol and ether are
         called volatile liquids for a similar reason, and
         because they easily pass into the state of vapor on the
         application of heat. on the contrary, gold is a fixed
         substance, because it does not suffer waste, even when
         exposed to the heat of a furnace; and oils are called
         fixed when they do not evaporate on simple exposure to
         the atmosphere.
         1913 webster

   3. fig.: light-hearted; easily affected by circumstances;
      airy; lively; hence, changeable; fickle; as, a volatile
      temper.
      1913 webster

            you are as giddy and volatile as ever. --swift.
      1913 webster

   volatile alkali. old chem. see under alkali.

   volatile liniment, a liniment composed of sweet oil and
      ammonia, so called from the readiness with which the
      latter evaporates.

   volatile oils. chem. see essential oils, under
      essential.
      1913 webster
see also:
volley volatile alkali alkali volatile liniment volatile oils essential oils 
essential 

[2] : The Collaborative International Dictionary of English v.0.48

volatile \vol"atile\, n. cf. f. volatile.
   a winged animal; wild fowl; game. obs. --chaucer. --sir t.
   browne.
   1913 webster volatileness

[3] : WordNet (r) 2.0

volatile
     adj 1: evaporating readily at normal temperatures and pressures;
            "volatile oils"; "volatile solvents" ant: nonvolatile
     2: liable to lead to sudden change or violence; "an explosive
        issue"; "a volatile situation with troops and rioters
        eager for a confrontation" syn: explosive
     3: marked by erratic changeableness in affections or
        attachments; "fickle friends"; "a flirt's volatile
        affections" syn: fickle
     4: tending to vary often or widely; "volatile stocks";
        "volatile emotions"
     n : a volatile substance; a substance that changes readily from
         solid or liquid to a vapor; "it was heated to evaporate
         the volatiles"
see also:
nonvolatile explosive fickle 

[4] : Moby Thesaurus II by Grady Ward, 1.0

167 moby thesaurus words for "volatile":
   adrift, afloat, agitable, airy, alternating, amorphous,
   birdbrained, birdwitted, bouncy, brittle, bubbly, buoyant,
   capricious, changeable, changeful, charged, coquettish,
   corruptible, deciduous, desultory, deviable, dizzy, downy, dying,
   eccentric, edgy, effervescent, ephemeral, erratic, eruptive,
   ethereal, evanescent, evaporable, evaporative, expansive,
   explosive, faddish, fading, fast and loose, featherbrained,
   feathery, fickle, fitful, fleeting, flickering, flighty, flippant,
   flirtatious, flitting, fluctuating, fluffy, fly-by-night, flying,
   foamy, fragile, frail, freakish, frivolous, frothy, fugacious,
   fugitive, giddy, gossamery, hair-trigger, impermanent, impetuous,
   imponderous, impulsive, inconsistent, inconstant, indecisive,
   infirm, insubstantial, irregular, irresolute, irresponsible, leger,
   light, light as air, light-minded, lighter than vanity, lubricious,
   mazy, mercurial, momentary, moody, mortal, mousse, mutable,
   nondurable, nonpermanent, passing, perishable, protean,
   quicksilver, rambling, resilient, restless, roving, scatterbrained,
   sensitive, shallow, shallow-headed, shallow-minded, shallow-pated,
   shallow-witted, shapeless, shifting, shifty, short-lived,
   shuffling, skittery, skittish, souffle, spasmodic, spineless,
   startlish, superficial, temperamental, temporal, temporary, tense,
   ticklish, toying, transient, transitive, transitory, unaccountable,
   uncertain, uncontrolled, undependable, undisciplined, undurable,
   unenduring, unfixed, unheavy, unpredictable, unprofound,
   unreliable, unrestrained, unsettled, unstable, unstable as water,
   unstaid, unsteadfast, unsteady, vacillating, vagrant, vaporable,
   vaporescent, vaporizable, vaporizing, variable, versatile,
   vicissitudinary, vicissitudinous, volatilizable, wandering, wanton,
   wavering, wavery, wavy, wayward, weightless, whimsical,
   wishy-washy, yeasty

[5] : The Free On-line Dictionary of Computing (27 SEP 03)

volatile
     
        1.  volatile variable.
     
        2.  see non-volatile storage.
     
        1997-06-05
     
     
see also:
volatile variable non-volatile storage 

Volatile >> V Words
Volatile, definition of term: Volatile
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Volatile Oil >> V Words
Volatile Oil, definition of term: Volatile Oil
volatile+oil_pag1.html