Where does “火口” come from?

火口 (Japanese) comes from Japanese 火, from Old Japanese 火, from Proto-Japonic poy, from Proto-Japonic po.

火口 (Japanese): a crater; the firedoor of a boiler; the origin of...

Definitions

  1. a crater; the firedoor of a boiler; the origin of...

Ancestry of “火口”, step by step

火口 traces back through two separate lines of ancestry.

via Japanese 火

StepLanguageWordMeaning
1Japanese火"term relating to fire"; a light; a burning...
2Old Japanese火a fire; a light
3Proto-Japonicpoyfire
4Proto-Japonicpo—

via Japanese 口

StepLanguageWordMeaning
1Japanese口mouth; opening; the mouth
2Japaneseくちmouth
3Japanese朽ちる—
Every word from Proto-Japonic po →Every word from Proto-Japonic poy →Every word from Old Japanese 火 →