also: でむぱ
noun
Only with reading でんぱ
Technical and everyday term for electromagnetic waves used in broadcasting, communication, and wireless technology. Also used for mobile phone reception.
このトンネルの中は電波が届かない。
There's no signal inside this tunnel.
電波望
Observe distant stars with a radio telescope.
noun, na-adjective
saying weird things; crazy talk; out of touch
Slang derived from the idea of picking up strange radio signals. Describes someone who says bizarre, nonsensical, or delusional things. Often used in the phrase 電波な人 or 電波系.
See also: 電波系 (でんぱけい)
あの人の話はいつも電波だ。
That person's talk is always crazy.
ネットで電波な書き込みを見つけた。
I found a weird, out-of-touch post online.