The French word quotidien comes from Latin dies, diei. Are there any other French words that come from this Latin root? The word jour is so predominantly used to mean "day", that I'm curious whether there are any other words built from the Latin dies.

1 Answer 1


The di used in all weekdays come from dies (e.g. dies dominicusdimanche, lunae dieslundi...).

Jour and diurne come indirectly from dies too. (diesdiurnusjornjour)

Aujourd'hui is coming twice from dies: jour as already written, and hui from hodie / hoc die (in this day).

Midi (noon) and méridien from meridies (medius dies)

Circadien from circa diem (about one day).

diète from dieta , dies

jadis from old French ja a dis

tandis from Latin tamdiu (tam diu)

  • And also "diurne"
    – Distic
    Commented Sep 29, 2017 at 20:31
  • @distic yes indirectly through diurnus like jour
    – jlliagre
    Commented Sep 29, 2017 at 20:34
  • Très bonne réponse! Merci.
    – ktm5124
    Commented Sep 29, 2017 at 23:47
  • I find it especially interesting that jour comes from dies, indirectly.
    – ktm5124
    Commented Sep 29, 2017 at 23:47

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