Where does “夏の大三角形” come from?

夏の大三角形 (Japanese) comes from Japanese 大, from Old Japanese 大, from Proto-Japonic əpə — big, large; many.

夏の大三角形 (Japanese): Summer Triangle - a bright asterism of the northern summer sky. Its corners are the stars Altair, Deneb, and Vega

Definitions

  1. Summer Triangle - a bright asterism of the northern summer sky. Its corners are the stars Altair, Deneb, and Vega

Ancestry of “夏の大三角形”, step by step

夏の大三角形 traces back through 3 separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesebig, large; the large part of; arch-
2Old Japanesebig, large; large
3Proto-Japonicəpəbig, large; many

via Japanese

StepLanguageWordMeaning
1Japanesesummer; summer according to the lunisolar...
2Middle Chinese

via Japanese 三角形

StepLanguageWordMeaning
1Japanese三角形a triangle
Every word from Proto-Japonic əpəEvery word from Old Japanese Every word from Japanese