What is the prefix and meaning of intervene?

Answer 1

To come between, or to be between, persons or things; -- followed by between; as, the Mediterranean intervenes between Europe and Africa., 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., To interpose; as, to intervene to settle a quarrel., 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., To come between., A coming between; intervention; meeting.

Answer 2

The prefix is "inter-" and it means "between" or "among." "Intervene" means to come between or to become involved in a situation in order to alter or prevent its outcome.