Where does “七つの海” come from?

七つの海 (Japanese) comes from Japanese の, from Old Japanese の, from Middle Chinese 能 — talent, ability.

七つの海 (Japanese): the seven seas

Definitions

  1. the seven seas

Ancestry of “七つの海”, step by step

七つの海 traces back through 3 separate lines of ancestry.

via Japanese の

StepLanguageWordMeaning
1Japaneseのgenitive case marker; nominative case marker in a...
2Old Japaneseのplain, field
3Middle Chinese能talent, ability

via Japanese 海

StepLanguageWordMeaning
1Japanese海a sea, an ocean; a lake; an object covering over...
2Old Japaneseうな—

via Japanese 七つ

StepLanguageWordMeaning
1Japanese七つseven things [small or without a counter category]
Every word from Middle Chinese 能 →Every word from Old Japanese の →Every word from Japanese の →