1. the action or process of intervening: "they are plants that grow naturally without human intervention"
▪ interference by a country in another's affairs: "the administration was reported to be considering military intervention"
▪ action taken to improve a situation, especially a medical disorder: "two patients were referred for surgical intervention"
▪ an occasion on which a person with an addiction or other behavioral problem is confronted by a group of friends or family members in an attempt to persuade them to address the issue:"as her health worsened, her daughters considered staging an intervention"
Word Originlate Middle English: from Latin interventio(n-), from the verb intervenire (see intervene).