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

disruption \disrup"tion\, n. l. disruptio, diruptio.
   the act or rending asunder, or the state of being rent
   asunder or broken in pieces; breach; rent; dilaceration;
   rupture; as, the disruption of rocks in an earthquake;
   disruption of a state.
   1913 webster

[2] : WordNet (r) 2.0

disruption
     n 1: an act of delaying or interrupting the continuity; "it was
          presented without commercial breaks" syn: break, interruption,
           gap
     2: a disorderly outburst or tumult; "they were amazed by the
        furious disturbance they had caused" syn: disturbance,
        commotion, stir, flutter, hurly burly, to-do, hoo-ha,
         hoo-hah, kerfuffle
     3: an event that results in a displacement or discontinuity
        syn: dislocation
     4: the act of causing disorder syn: perturbation
see also:
break interruption gap disturbance commotion stir 
flutter hurly burly to-do hoo-ha hoo-hah 
kerfuffle dislocation perturbation 

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

135 moby thesaurus words for "disruption":
   alienation, anarchism, anarcho-syndicalism, anarchy, antinomianism,
   badness, bloodbath, blue ruin, breach, breach of friendship, break,
   breakup, carnage, chaos, cleavage, cleft, confusion, consumption,
   crack-up, criminal syndicalism, damnation, decimation, depredation,
   derangement, desolation, despoilment, despoliation, destruction,
   devastation, diffusion, disaffection, disarrangement, disarray,
   disarticulation, discomfiture, discomposure, disconcertedness,
   discourtesy, disfavor, disharmony, dishevelment, disintegration,
   disjunction, disorder, disorderliness, disorderly conduct,
   disorganization, dispersal, disproportion, disruptiveness,
   dissolution, disturbance, disunion, disunity, divergence,
   dividedness, division, entropy, estrangement, exfoliation,
   falling-out, fragmentation, frowned-upon behavior, haphazardness,
   havoc, hecatomb, holocaust, hooliganism, horseplay, impropriety,
   incoherence, indiscriminateness, inharmonious harmony,
   irregularity, lynch law, misbehavior, misconduct, misdemeanor,
   misdoing, misrule, mob law, mob rule, mobocracy,
   most admired disorder, naughtiness, nihilism,
   nonsanctioned behavior, nonsymmetry, nonuniformity, ochlocracy,
   open rupture, perdition, perturbation, primal chaos, promiscuity,
   promiscuousness, randomness, ravage, rebellion,
   recall of ambassadors, revolution, rift, roughhouse, rowdiness,
   rowdyism, ruffianism, ruin, ruination, rupture, scaling,
   scattering, schism, separation, shambles, shattering, slaughter,
   split, spoliation, syndicalism, tohubohu, turbulence, turmoil,
   undoing, unruliness, unsymmetry, ununiformity, upset, vandalism,
   venial sin, vice, waste, wrack, wrack and ruin, wreck,
   wrongdoing

Disruption >> D Words
Disruption, definition of term: Disruption
disruption_pag1.html