Where does “subdiurnare” come from?

subdiurnare (Vulgar Latin) comes from Latin diurnus, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous, from Proto-Indo-European dyḗws, from Proto-Indo-European dyéws, from Proto-Indo-European dyew- — to be bright; sky, heaven.

Ancestry of “subdiurnare”, step by step

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

Words derived from “subdiurnare”

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