(a) see quot. 1887; in wider use, any unwanted transfer of signals from one circuit, channel, etc., to another; also, in Radio, a reproduced signal…

Electrical disturbances producing interference with the reception of telecommunications and broadcasts, typically manifesting as crackling or…

In wireless telegraphy (also in combination x-stopper): see quot. 1906.

With plural agreement. = static, n. 4a. Now rare.

Radio and Telephony. In plural. A form of atmospheric interference heard as short sharp sounds. Cf. grinder, n. 9, stray, n. 3. Now rare.

Jamming (of broadcasts, devices, etc.), or an instance of this. Hence ˈjam-proof adj. proof against jamming. Cf. jam, v.1 3c.

Radio. An atmospheric disturbance of relatively long duration heard as a rumbling sound and probably caused by lightning.

Originally and chiefly Radio. Random or irregular fluctuations or disturbances in a signal, caused by interference and often resulting in static; Cf…

Radio. Distortion or noise heard as a hissing or rushing sound.

In full radio echo. A radio wave which has been reflected or otherwise returned with sufficient magnitude and delay to be perceived as a wave…

Radio. An undesired signal whose frequency is such that, after being combined with the local frequency of a heterodyne receiver, it will generate…

= echo, n. 1d.

Mathematics. Of or relating to harmonics (sense A. 2b), as harmonic distortion non-linear distortion of a wave-form in which harmonics of the…

= image, n. 10; usually attributive.