disjoin

dis·join  (ds-join)

v. dis·joined, dis·join·ing, dis·joins

v.tr.

To undo the joining of; separate.

v.intr.

To become separated.

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[Middle English disjoinen, from Old French desjoindre, from Latin disiungere : dis-, dis- + iungere, to join; see join.]

Thesaurus

Verb	1.	disjoin - make disjoint, separated, or disconnected; undo the joining of disjoint disunite, separate, part, divide - force, take, or pull apart; "He separated the fighting children"; "Moses parted the Red Sea" bring together, join - cause to become joined or linked; "join these two parts so that they fit together"
	2.	disjoin - become separated, disconnected or disjoint disjoint divide, part, separate - come apart; "The two pieces that we had glued separated" conjoin, join - make contact or come together; "The two roads join here"