Japanese edit

For pronunciation and definitions of でんぱ – see the following entries.
電波
[noun] radio wave
[noun] mobile phone signal
[noun] (slang) nonsense produced by a mentally unsound person, who is termed a 電波(でんぱ)(けい) (denpa-kei, radio-wave-type) person
[adjective] (slang) random and nonsensical
伝播
[noun] transmission, propagation
[verb] to propagate, to transmit
(This term, でんぱ, is the hiragana spelling of the above terms.)