Third-person singular simple present indicative form of intervene

(intransitive) To become involved in a situation, so as to alter or prevent an action. / (intransitive) To occur, fall, or come between, points of time, or events.

intervention; mediation

That intervenes or mediates. / Falling between two periods or events.

present participle of intervene

simple past tense and past participle of intervene

One who intervenes.

plural of intervener

(anatomy, botany) Between veins.

plural of intervening