Where does “dydd Mercher” come from?

dydd Mercher (Welsh) comes from Welsh dydd, from Middle Welsh dyð, from Old Welsh did, from Proto-Brythonic dið, from Proto-Celtic dīyos, from Proto-Indo-European dyḗws, from Proto-Indo-European dyéws, from Proto-Indo-European dyew- — to be bright; sky, heaven.

dydd Mercher (Welsh): Wednesday; Wednesday daytime

Definitions

  1. Wednesday; Wednesday daytime

Ancestry of “dydd Mercher”, step by step

dydd Mercher traces back through 3 separate lines of ancestry.

via Welsh dydd

StepLanguageWordMeaning
1Welshdyddday, daytime
2Middle Welshdyðday
3Old Welshdidday
4Proto-Brythonicdiðday, daytime
5Proto-Celticdīyosday
6Proto-Indo-Europeandyḗwssky, heaven; sky god
7Proto-Indo-Europeandyéwssky, heaven
8Proto-Indo-Europeandyew-to be bright; sky, heaven

via Latin diēs Mercuriī

StepLanguageWordMeaning
1Latindiēs MercuriīWednesday
2Sanskritसौम्यवारWednesday
3SanskritवारAlternative form of वाल; keeping back,...
4Sanskritवर"environing", "enclosing", circumference, space,...
5Sanskritवीरman, especially a brave or eminent man, hero,...
6Proto-Indo-Iranianwīrás
7Proto-Indo-EuropeanwiHrósman; husband; warrior, hero
8Proto-Indo-Europeanweyh₁-to chase, pursue; to suppress, persecute

via Welsh Mercher

StepLanguageWordMeaning
1WelshMercherMercury, Wednesday
Every word from Proto-Indo-European dyew-
dydd Mercher — Etymology, Origin & Word History | Etymology Explorer