The Collaborative International Dictionary of English v.0.48:

Disrupt \Dis*rupt"\, a. [L. disruptus, diruptus, p. p. of
   disrumpere, to break or burst asunder; dis- + rumpere to
   break, burst. See Rupture.]
   Rent off; torn asunder; severed; disrupted.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

disrupt \dis*rupt"\, v. t. [imp. & p. p. Disrupted; p. pr. &
   vb. n. Disrupting.]
   1. To break asunder; to rend. --Thomson.
      [1913 Webster]

   2. to destroy the continuity of, usually temporarily; as,
      electrical power was disrupted by the hurricane.
      [PJC]

   3. To interfere with or halt, especially by causing a lack of
      order; as, the shouting of the demonstrators disrupted the
      meeting.
      [PJC]

WordNet (r) 3.0 (2006):

disrupt
    v 1: make a break in; "We interrupt the program for the
         following messages" [syn: interrupt, disrupt, break
         up, cut off]
    2: throw into disorder; "This event disrupted the orderly
       process"
    3: interfere in someone else's activity; "Please don't interrupt
       me while I'm on the phone" [syn: interrupt, disrupt]