Where does “短時間” come from?

短時間 (Japanese) comes from Japanese 短, from Middle Chinese 短 — short.

短時間 (Japanese): short span of time

Definitions

  1. short span of time

Ancestry of “短時間”, step by step

短時間 traces back through two separate lines of ancestry.

via Japanese 短

StepLanguageWordMeaning
1Japanese短fault, weak point; minor
2Middle Chinese短short

via Japanese 時間

StepLanguageWordMeaning
1Japanese時間time; hour; the hours or time when something...
2Middle Chineseじかん—
Every word from Middle Chinese 短 →Every word from Japanese 短 →
短時間 — Etymology, Origin & Word History | Etymology Explorer