Where does “とも座” come from?

とも座 (Japanese) comes from Japanese 座, from Middle Chinese 座.

とも座 (Japanese): Puppis

Definitions

  1. Puppis

Ancestry of “とも座”, step by step

とも座 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesenames of constellations; names of theaters
2Middle Chinese

via Japanese

StepLanguageWordMeaning
1Japanesethe stern of a boat
Every word from Middle Chinese Every word from Japanese