Where does “diurnal” come from?

Diurnal comes from Latin diurnalis, an adjective derived from Latin dies meaning "day."

diurnal (English): Happening or occurring during daylight, or...

Definitions

  1. Happening or occurring during daylight, or...

Ancestry of “diurnal”, step by step

StepLanguageWordMeaning
1Latindiurnālisdiurnal of the day; that takes place during the day
2Latindiurnusof the day; daily; day
3LatindiēsA day, particularly
4Proto-Italicdjēmaccusative singular of *djous
5Proto-Italic*djous—
6Proto-Indo-Europeandyḗwssky, heaven; sky god
7Proto-Indo-Europeandyéwssky, heaven
8Proto-Indo-Europeandyew-to be bright; sky, heaven

Words derived from “diurnal”

Every word from Proto-Indo-European dyew- →Every word from Proto-Indo-European dyéws →Every word from Proto-Indo-European dyḗws →