Etymology of the Latin word diurnus
the Latin word
diurnus (by day, of the day; daily)
derived from the Latin word
dies (day; daylight; specific day; day in question; date of letter)
derived from the Proto-Indo-European root
*dyeu-Derivations in Latin
diurnalis,
diurnum,
subdiurnareDerivations in other languages
French
jour, French
diurne, Italian
diurno, Portuguese
diurno, Spanish
diurno