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Definition of interference
noun [mass noun]
1the action of interfering or the process of being interfered with:concerns about government interference in church life [count noun]:an unwarranted interference with personal liberty American Football the legal blocking of an opponent to clear a way for the ball carrier. (in ice hockey and other sports) the illegal hindering of an opponent not in possession of the puck or ball. 2 Physics the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or cancelled. the fading or disturbance of received radio signals caused by unwanted signals from other sources, such as unshielded electrical equipment, or broadcasts from other channels.