noun
Obsolete term used by the Imperial Japanese Navy for 'radar'. Replaced by レーダー in modern Japanese.
旧日本海軍では、レーダーのことを電波探信儀と呼んでいた。
In the former Imperial Japanese Navy, radar was called 電波探信儀.
Modern standard term for 'radar'. 電波探信儀 is an obsolete historical term.
Compound of 電波 (radio wave), 探信 (signal detection), and 儀 (instrument). Coined by the Imperial Japanese Navy.