Definition of: intervention

(in′tər·ven′shən) noun
1. The act of intervening or coming between.
2. Interference with the acts of others.
3. Law The becoming or applying to become a party to a suit in which the applicant has an interest.
4. In international law, interference in the affairs of one country by another by force or threat of force.
5. An intervening time, event, or thing. [<LL interventio, -onis <interventus, pp. of intervenire intervene]
—in′ter·ven′tion·al adjective