Where does “Rătești” come from?

Rătești (English) comes from Romanian Rătești, from Romanian rață, from Latin diurnum, from Latin diurnus, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous, from Proto-Indo-European dyḗws — to be bright; sky, heaven.

Ancestry of “Rătești”, step by step

StepLanguageWordMeaning
1RomanianRătești
2Romanianrațăduck; female duck; urinal
3Latindiurnummasculine accusative singular of diurnus; neuter...
4Latindiurnusof the day; daily; day
5LatindiēsA day, particularly
6Proto-Italicdjēmaccusative singular of *djous
7Proto-Italic*djous
8Proto-Indo-Europeandyḗwssky, heaven; sky god
9Proto-Indo-Europeandyéwssky, heaven
10Proto-Indo-Europeandyew-to be bright; sky, heaven
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws