French word jour comes from Proto-Indo-European *dyéw(i), Latin diovos, Latin diu, and later Latin diurnus (Daily. Of the day Day (medieval Latin only).)
*dyéw(i) (Proto-Indo-European)
diovos (Latin)
diu (Latin)
Continually, all day. Long enough. Long, long while, for a long time.
diem (Latin)
diurnus (Latin)
Daily. Of the day Day (medieval Latin only).
diurnum (Latin)
jorn (Old French)
jour (French)
Day. Daylight, light. Opening, aperture.
Get a French Tutor