disjoin

[dis-join] /dɪsˈdʒɔɪn/
verb (used with object)
1.
to undo or prevent the junction or union of; disunite; separate.
verb (used without object)
2.
to become disunited; separate.
Origin
1475-85; Middle English disjoinen < Old French desjoindre < Latin disjungere, equivalent to dis- dis-1 + jungere to join
Related forms
disjoinable, adjective
British Dictionary definitions for disjoin

disjoin

/dɪsˈdʒɔɪn/
verb
1.
to disconnect or become disconnected; separate
Derived Forms
disjoinable, adjective