The Collaborative International Dictionary of English v.0.48:

Ebullition \Eb`ul*li"tion\, n. [F. ['e]bullition, L. ebullitio,
   fr. ebullire. See Ebullient.]
   1. A boiling or bubbling up of a liquid; the motion produced
      in a liquid by its rapid conversion into vapor.
      [1913 Webster]

   2. Effervescence occasioned by fermentation or by any other
      process which causes the liberation of a gas or an
      a["e]riform fluid, as in the mixture of an acid with a
      carbonated alkali. [Formerly written bullition.]
      [1913 Webster]

   3. A sudden burst or violent display; an outburst; as, an
      ebullition of anger or ill temper.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ebullition
    n 1: an unrestrained expression of emotion [syn: effusion,
         gush, outburst, blowup, ebullition]

Moby Thesaurus II by Grady Ward, 1.0:

116 Moby Thesaurus words for "ebullition":
   ado, agitation, bluster, bobbery, boil, boiling, brawl, broil,
   brouhaha, bubbliness, bubbling, bustle, cacophony, carbonation,
   chaos, churn, coction, commotion, conturbation, decoction,
   discomposure, disorder, disquiet, disquietude, disturbance,
   ebullience, ebulliency, ebulliometer, eddy, effervescence,
   effervescency, embroilment, excitement, fanaticism, feery-fary,
   ferment, fermentation, fever, feverishness, fidgets, fizz, fizzle,
   flap, flurry, fluster, flutteration, foaming, foment, fomentation,
   foofaraw, frenzy, frothiness, frothing, fume, furor, furore, fury,
   fuss, hubbub, hurly-burly, hurry, hurry-scurry, inquietude,
   jitters, jumpiness, maelstrom, malaise, moil, nerviness, nervosity,
   nervousness, pandemonium, passion, pell-mell, perturbation, racket,
   rage, restlessness, roil, rout, row, ruckus, ruffle, rumpus,
   seethe, seething, simmer, simmering, sparkle, spumescence, stewing,
   stir, storminess, swirl, swirling, tempestuousness, to-do,
   trepidation, trepidity, tumult, tumultuation, tumultuousness,
   turbidity, turbulence, turmoil, twitter, unease, unrest, uproar,
   upset, vortex, whirl, wildness, yeastiness, zeal, zealousness