|1.||The act of intervening; interposition.|
|2.||Any interference that may affect the interests of others; especially, of one or more states with the affairs of another; - the intervention of one state in the affairs of another is typically unwelcome by the state being intervened in, but some cases of mediation between states may be called intervention. Opposed to |
|3.||(Civil Law) The act by which a third person, to protect his own interest, interposes and becomes a party to a suit pending between other parties.|
|Noun||1.||intervention - the act of intervening (as to mediate a dispute)|
|2.||intervention - a policy of intervening in the affairs of other countries|
|3.||intervention - (law) a proceeding that permits a person to enter into a lawsuit already in progress; admission of person not an original party to the suit so that person can protect some right or interest that is allegedly affected by the proceedings; "the purpose of intervention is to prevent unnecessary duplication of lawsuits"|
INTERVENTION, civil law. The act by which a third party becomes a party in a
suit pending between other persons.
2. The intervention is made either to be joined to the plaintiff, and to claim the same thing he does, or some other thing connected with it or, to join the defendant, and with him to oppose the claim of the plaintiff, which it is his interest to defeat. Poth. Proced. Civ. lere part. ch. 2, s. 6, Sec. 3. In the English ecclesiastical courts, the same term is used in the same sense.
3. When a third person, not originally a party to the suit or proceeding, but claiming an interest in the subject-matter in dispute, may, in order the better to protect such interest, interpose his claim, which proceeding is termed intervention. 2 Chit. Pr. 492; 3 Chit. Com. Law, 633; 2 Hagg. Cons. R. 137; 3 Phillim. R. 586; 1 Addams, R. 5; Ought. tit. 14; 4 Hagg. Eccl. R. 67 Dual. Ad. Pr. 74. The intervener may come in at any stage of the cause, and even after judgment, if an appeal can be allowed on such judgment. 2 Hagg. Cons. R. 137: 1 Eng. feel. R. 480; 2 E.g. Eccl. R. 13.