Where does “午後” come from?

午後 (Japanese) comes from Japanese 後, from Japanese 跡, from Japanese 足, from Old Japanese 足.

午後 (Japanese): afternoon, PM

Definitions

  1. afternoon, PM

Ancestry of “午後”, step by step

午後 traces back through two separate lines of ancestry.

via Japanese 後

StepLanguageWordMeaning
1Japanese後the back, the rear, behind; later, afterwards,...
2Japanese跡a track or trace; evidence of something moving,...
3Japanese足foot; 脚 leg
4Old Japanese足—

via Japanese 午

StepLanguageWordMeaning
1Japanese午noon; the {{w|Ox |Chinese zodiac Ox}}
2Japanese馬a horse; a promoted bishop; a sawhorse: a...
3Middle Chinese馬—
Every word from Old Japanese 足 →Every word from Japanese 足 →Every word from Japanese 跡 →