dis·joint 
(d
ĭs-joint
)
v. dis·joint·ed, dis·joint·ing, dis·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.]