Where does “電波天文学” come from?

電波天文学 (Japanese) comes from Japanese 天文学, from Japanese 天文, from Old Japanese てんもん, from Middle Chinese てんもん.

電波天文学 (Japanese): radio astronomy

Definitions

  1. radio astronomy

Ancestry of “電波天文学”, step by step

電波天文学 traces back through two separate lines of ancestry.

via Japanese 天文学

StepLanguageWordMeaning
1Japanese天文学astronomy
2Japanese天文astronomy
3Old Japaneseてんもん—
4Middle Chineseてんもん—

via Japanese 電波

StepLanguageWordMeaning
1Japanese電波radio wave; mobile phone signal; nonsense...
Every word from Middle Chinese てんもん →Every word from Old Japanese てんもん →Every word from Japanese 天文 →