Where does “世界語” come from?

世界語 (Japanese) comes from Japanese 語, from Chinese 語.

世界語 (Japanese): international auxiliary language; world language

Definitions

  1. international auxiliary language; world language

Ancestry of “世界語”, step by step

世界語 traces back through two separate lines of ancestry.

via Japanese 語

StepLanguageWordMeaning
1Japanese語a word, term; a proverb; language of, -ese, -ish
2Chinese語—

via Japanese 世界

StepLanguageWordMeaning
1Japanese世界the world; a metaphorical world; society, the...
2Middle Chinese世界—
Every word from Chinese 語 →Every word from Japanese 語 →
世界語 — Etymology, Origin & Word History | Etymology Explorer