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dyddiad

date

NounMasculine (gwrywaidd)B2/ˈdəðjad/

"dyddiad" means "date" in Welsh (masculine noun). Pronounced /ˈdəðjad/. Mutation forms: Treiglad Meddal → ddyddiad, Treiglad Trwynol → nyddiad.

Mutation forms

In Welsh, the first letter of "dyddiad" changes depending on the grammatical context. These are the mutated forms:

MutationForm
Base formdyddiad
Treiglad Meddalddyddiad
Treiglad Trwynolnyddiad

"dyddiad" in context

Rhaid adolygu'r strategaeth BSL o leiaf unwaith bob chwe blynedd o'r dyddiad y cafodd ei chyhoeddi gyntaf, er y gellir ei hadolygu ar unrhyw adeg yn y cyfnod hwnnw.

The BSL strategy must be reviewed at least once in every six years from the date it was first published, although it can be reviewed at any time within that period.

C1

Hynny yw, beth sy’n digwydd os na fydd y gwaith wedi cael ei gwblhau erbyn y dyddiad rydych chi wedi'i osod iddyn nhw?

That is, what happens if those remediation works haven’t been completed by the date that you’ve set?

C1

Gallai oedi y tu hwnt i'r dyddiad hwn effeithio ar y broses o gyflawni'r etholiad.

Delays beyond this date could affect the delivery of the election.

B2

Fel yr ydych newydd glywed y Cwnsler Cyffredinol yn cadarnhau, rhagwelir o hyd mai dyddiad cwblhau trafodion Cyfnod 2 fydd 13 Chwefror, a bydd angen cytuno ar y penderfyniad ariannol neu beidio cyn y dyddiad hwnnw.

As you have just heard the Counsel General confirm, completion of the Stage 2 proceedings is still envisaged as 13 February, and the financial resolution will need to be agreed or not before that date.

C2

Fel y gwnaethoch chi ei ddweud, Prif Weinidog, mae'r Western Mail wedi adrodd bod ymgeiswyr o'r rhannau mwyaf difreintiedig o Gymru a anfonodd eu ceisiadau erbyn dyddiad cau mis Ionawr wedi cynyddu 13.6 y cant o'i gymharu â'r llynedd.

As you said, First Minister, the Western Mail has reported that applicants from the most deprived parts of Wales who sent in their applications by the January deadline rose by 13.6 per cent compared with last year.

C2

Further reading

Welsh Mutations Explained — Soft, Nasal & Aspirate →Welsh Pronunciation — It's Actually Easier Than English →How to Learn Welsh as an Adult — A Step-by-Step Roadmap →Best Apps to Learn Welsh (2026) →Browse all Welsh vocabulary →

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Related Welsh words

Dydd Llun

Monday

Dydd Mawrth

Tuesday

Dydd Mercher

Wednesday

Dydd Iau

Thursday

Dydd Gwener

Friday

Dydd Sadwrn

Saturday

Dydd Sul

Sunday

wythnos

week

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