verb (used with object)

to separate or disconnect the joints or joinings of.
to put out of order; derange.

verb (used without object)

to come apart.
to be dislocated; be out of joint.


  1. (of two sets) having no common elements.
  2. (of a system of sets) having the property that every pair of sets is disjoint.
Obsolete. disjointed; out of joint.

Origin of disjoint

1400–50; late Middle English disjointen to destroy < Anglo-French, Old French desjoint, past participle of desjoindre to disjoin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for disjoint

dismember, disarrange, dislocate, luxate, disarticulate

Examples from the Web for disjoint

Historical Examples of disjoint

British Dictionary definitions for disjoint



to take apart or come apart at the joints
(tr) to disunite or disjoin
to dislocate or become dislocated
(tr; usually passive) to end the unity, sequence, or coherence of


maths (of two sets) having no members in common
obsolete disjointed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

disjoint in Medicine




To put out of joint; dislocate.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.