(ambitransitive) To come between, or to be between, persons or things.The Mediterranean intervenes between Europe and Africa.
De Quinceyself-sown woodlands of birch, alder, etc., intervening the different estates
(intransitive) To occur, fall, or come between, points of time, or events; as, an instant intervened between the flash and the report; nothing intervened (i.e. between the intention and the execution) to prevent the undertaking.
(intransitive) To interpose; as, to intervene to settle a quarrel; get involved, so as to alter or hinder an action
(legal) In a suit to which one has not been made a party, to put forward a defense of one's interest in the subject matter.
