Where does “皇国” come from?

皇国 (Japanese) comes from Japanese 皇, from Japanese 天皇, from Old Japanese 天皇, from Old Japanese 君 — emperor; lord, master → sovereign.

皇国 (Japanese): an empire; specifically, the Empire of Japan

Definitions

  1. an empire; specifically, the Empire of Japan

Ancestry of “皇国”, step by step

皇国 traces back through two separate lines of ancestry.

via Japanese 皇

StepLanguageWordMeaning
1Japanese皇creator
2Japanese天皇an Emperor or Empress of Japan; an emperor,...
3Old Japanese天皇a sovereign who governs a region; a term of...
4Old Japanese君emperor; lord, master → sovereign

via Japanese 国

StepLanguageWordMeaning
1Japanese国a land, a large place; a country in general, a...
2Old Japanese国—
Every word from Old Japanese 君 →Every word from Old Japanese 天皇 →Every word from Japanese 天皇 →