dydd

== Welsh == === Etymology === From Middle Welsh dyð, from Old Welsh did, from Proto-Brythonic *dɨð, from Proto-Celtic *dyīus (compare Cornish dydh, Breton deiz, Old Irish día), from Proto-Indo-European *dyḗws (compare Latin diēs). === Pronunciation === (North Wales) IPA(key): /dɨːð/ (South Wales) IPA(key): /diːð/ Rhymes: -ɨːð === Noun === dydd m (plural dyddiau) day, daytime ==== Usage notes ==== Dydd generally refers to the uncountable period of light. Dydd is also used with the names days of the week and with holiday and festival names. It its in contrast to the word nos (“night, evening”). (cf. French jour, Italian giorno) yn ystod y dydd ― during the day(time) dydd Wener ― Friday day(time) Dydd Calan ― New Year's Day Diwrnod, on the other hand, is countable and refers to an individual day and so is the word used when employing a qualifying numeral or adjective. It is there the opposite of noson (“night, evening”). (cf. French journée, Italian giornata) diwrnod gwych ― a great day tri diwrnod ― three days ==== Derived terms ==== ==== Related terms ==== peunydd === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “dydd”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies