1 interference (in sth) the act of getting involved in a situation that does not involve you and where you are not wanted 干涉；干预: I left home because I couldn't stand my parents' interference in my affairs. 我离家是因为受不了父母干涉我的事情。

2 extra noise (because of other signals or bad weather) that prevents you from receiving radio, television or telephone signals clearly （电台、电视广播或电话信号所受到的）干扰

3 the combination of two or more wave movements to form a new wave, which may be bigger or smaller than the first （两个波或以上的）干涉，干扰