Electromagnetic interference

disruption of the operation of electrical devices which is caused by the presence of electromagnetic radiation, EMI

Electromagnetic interference (or EMI, also called radio frequency interference or RFI) is a (usually unwanted input/output ripple) disturbance caused in a radio receiver or other electrical circuit by electromagnetic radiation emitted from an external source. The disturbance may interrupt, obstruct, or otherwise degrade or limit the effective performance of the circuit. The source may be any object, artificial or natural, that carries rapidly changing electrical currents, such as an electrical circuit, the Sun or the Northern Lights.
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Electromagnetic interference Cardiac pacing Radiated or conducted electrical or magnetic energy that can interfere with/disrupt pulse generator [more]Electromagnetic interference - Community and Resources

Any electromagnetic disturbance that interrupts, obstructs, or otherwise degrades or limits the effective performance of electronics/electrical equipment. It can be induced intentionally, as in some forms of electronic warfare, or unintentionally, as a result of spurious emissions and responses, intermodulation products, and the like. [JP1] Synonym radio frequency interference.

Any electromagnetic disturbance, whether intentional or not, which interrupts, obstructs, or otherwise degrades or limits the effective performance of electronic or electrical equipment. 1/7/87

Toute perturbation électromagnétique, intentionnelle ou non, qui interrompt, gêne, dégrade ou limite les performances escomptées des équipements électroniques ou électriques. 1/7/87