1. the action or process of intervening: "a high degree of state intervention in the economy"
▪ interference by a state in another's affairs: "the government was reported to be considering military intervention"
▪ action taken to improve a medical disorder: "two patients were referred for surgical intervention"
▪ an occasion on which a person with an addiction or other behavioural 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).