The Collaborative International Dictionary of English v.0.48:

Disconnect \Dis`con*nect"\, v. t. [imp. & p. p. Disconnected;
   p. pr. & vb. n. Disconnecting.]
   To dissolve the union or connection of; to disunite; to
   sever; to separate; to disperse.
   [1913 Webster]

         The commonwealth itself would . . . be disconnected
         into the dust and powder of individuality. --Burke.
   [1913 Webster]

         This restriction disconnects bank paper and the
         precious metals.                         --Walsh.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disconnect
    n 1: an unbridgeable disparity (as from a failure of
         understanding); "he felt a gulf between himself and his
         former friends"; "there is a vast disconnect between public
         opinion and federal policy" [syn: gulf, disconnect,
         disconnection]
    v 1: pull the plug of (electrical appliances) and render
         inoperable; "unplug the hair dryer after using it" [syn:
         unplug, disconnect] [ant: connect, plug in, plug
         into]
    2: make disconnected, disjoin or unfasten [ant: connect,
       link, link up, tie]

Moby Thesaurus II by Grady Ward, 1.0:

51 Moby Thesaurus words for "disconnect":
   abrupt, abstract, alienate, break off, cast off, cast out,
   cut adrift, cut apart, cut off, cut out, delete, depart, detach,
   disarticulate, disengage, disjoin, disjoint, dissociate, disunite,
   divide, divorce, eject, estrange, expel, isolate, leave, part,
   pull apart, pull away, pull back, pull out, segregate, separate,
   sequester, set apart, set aside, sever, shut off, split,
   stand aloof, stand apart, stand aside, step aside, subtract,
   throw off, throw out, uncouple, undo, unhook, unyoke, withdraw



The Free On-line Dictionary of Computing (30 December 2018):

SCSI reconnect
disconnect

    The ability of a SCSI initiator to initiate new
   transactions before earlier ones have completed.  A target or
   initiator can disconnect from the bus when it experiences a
   delay in completing a task so that another device can use the
   bus.  It can reconnect later and complete the task.

   (1999-02-16)