dis·joint / disˈjoint/ • v. [tr.] disturb the cohesion or organization of: the loss of the area disjointed military plans. ∎ dated take apart at the joints: disjoint a four-pound chicken, put in a pot, and simmer until tender.• adj. Math. (of two or more sets) having no elements in common.

disjoint A term applied to two sets that have no element in common, i.e. such that the intersection of the sets results in the empty set. A number of sets are said to be mutually disjoint if each pair is disjoint.