Emily Dickinson Lexicon

IN-TER-VEN'TION, n. [Fr. from L. interventio.]

1. A state of coming or being between; interposition. Light is not interrupted by the intervention of a transparent body.
2. Agency of persons between persons; interposition; mediation; any interference that may affect the interests of others. Let us decide our quarrels at home without the intervention of a foreign power. Temple.
3. Agency of means or instruments; as, effects are produced by the intervention of natural causes.
4. Interposition in favor of another; a voluntary undertaking of one party for another. A bill of exchange may be accepted by the intervention of a third person in behalf of the drawer or of one of the indorsers. French Commercial Code. Walsh.