disjoint: Definition, Synonyms and Much More from Answers.com

v., -joint·ed, -joint·ing, -joints.

v.tr.

1. To put out of joint; dislocate.
2. To take apart at the joints.
3. To destroy the coherence or connections of.
4. To separate; disjoin.

v.intr.

1. To come apart at the joints.
2. To become dislocated.

adj. Mathematics.

Having no elements in common. Used of sets.

[Middle English disjointen, to destroy, ultimately from Old French desjoint, past participle of desjoindre, to disjoin. See disjoin.]