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 dis·join·a·ble, adjective