Where does “世界線” come from?

世界線 (Japanese) comes from Japanese 世界, from Middle Chinese 世界.

世界線 (Japanese): world line

Definitions

  1. world line

Ancestry of “世界線”, step by step

世界線 traces back through two separate lines of ancestry.

via Japanese 世界

StepLanguageWordMeaning
1Japanese世界the world; a metaphorical world; society, the...
2Middle Chinese世界—

via Japanese 線

StepLanguageWordMeaning
1Japanese線line; level; beam
Every word from Middle Chinese 世界 →Every word from Japanese 世界 →