disjoint
Americanverb (used with object)
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to separate or disconnect the joints or joinings of.
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to put out of order; derange.
verb (used without object)
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to come apart.
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to be dislocated; be out of joint.
adjective
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Mathematics.
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(of two sets) having no common elements.
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(of a system of sets) having the property that every pair of sets is disjoint.
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Obsolete. disjointed; out of joint.
verb
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to take apart or come apart at the joints
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(tr) to disunite or disjoin
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to dislocate or become dislocated
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(tr; usually passive) to end the unity, sequence, or coherence of
adjective
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maths (of two sets) having no members in common
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obsolete disjointed
Etymology
Origin of disjoint
1400–50; late Middle English disjointen to destroy < Anglo-French, Old French desjoint, past participle of desjoindre to disjoin
Vocabulary lists containing disjoint
"The Tragedy of Macbeth," Vocabulary from Act 3
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Vocabulary Video Contest (2013) - List 2
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2014 Vocabulary Video Contest (A-L)
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These drama kings and queens of the novel are a chameleonic joint family of disjoint motives.
From Los Angeles Times ● Mar. 23, 2026
You can separate it into two disjoint pieces fairly easily: one of the pieces contains points with x coordinates less than 1/2 and one with x coordinates greater than 1/2.
From Scientific American ● Jun. 20, 2015
The data are divided into disjoint sub-samples and the BDT trained on one sub-sample is applied to a different sub-sample to avoid any bias.
From Nature ● May 12, 2015
How do we resolve this disjoint between a binary system that sees things only in black and white and the public’s need for an honest investigation of the shades of gray in between?
From Slate ● Dec. 10, 2014
She watched him disjoint a pair of frogs’ legs.
From "Franny and Zooey" by J. D. Salinger
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
