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About Ap Geiriaduron Cymraeg/Welsh

[sgroliwch i lawr ar gyfer Cymraeg]


The Ap Geiriaduron contains the Cysgair general dictionary, as well as the standardised terminology dictionaries for schools and further education colleges in Wales, Y Termiadur Addysg, and for Universities in Wales, Geiriadur Termau'r Coleg Cymraeg Cenedlaethol. All these dictionaries provide English-Welsh/Welsh-English entries and can be used offline in case you do not have an internet connection.

Features:

* Offline dictionary for anytime searches
* English and Welsh user interface languages
* Demutate and deconjugate Welsh words to show their original form.
* ‘Drill down’ feature to find more detailed information on specific words
* Wildcard Welsh searches; e.g. use it as a rhyming dictionary by searching for ‘*aith’ to find all words ending in ‘with’
* Contains the Cysgair Dictionary, an easy to use descriptive dictionary with over 25,000 Welsh and 25,000 English words
* Contains ‘Y Termiadur Addysg‘ dictionary; funded by the Welsh Government as the dictionary of standardised terminology for schools and further education
* Contains the Geiriadur Termau’r Coleg Cymraeg; containing definitions, images and diagrams; funded by the Coleg Cymraeg Cenedlaethol as the dictionary of standardised terminology for Welsh-medium higher education
* Provides a gateway to the National Terminology Portal at termau.cymru for expanded searches
* Automatic updating of dictionaries as new words, terms and dictionaries are added

The Ap Geiriaduron is a Bangor University application, part-funded by a Go Wales graduate scheme. Further versions were funded by the Coleg Cymraeg Cenedlaethol’s Grantiau Bychan (small grants) scheme so as to adapt for including their dictionaries.

Developers:
Patrick Robertson, David Chan, Dewi Bryn Jones.

Editors / Terminologists:
Gruffudd Prys, Tegau Andrews, Delyth Prys

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Mae'r Ap Geiriaduron yn cynnwys geiriadur cyffredinol Cysgair yn ogystal â geiriaduron termau safonol ar ffurf Y Termiadur Addysg (sy'n darparu termau ar gyfer ysgolion a cholegau addysg bellach Cymru), a Geiriadur Termau'r Coleg Cymraeg Cenedlaethol sy'n darparu termau wedi'u diffionio ar gyfer prifysgolion Cymru. Mae'r geiriaduron hyn i gyd yn rhai Saesneg-Cymraeg/Cymraeg-Saesneg all-lein lle nad oes arnoch angen cyswllt gwe i'w defnyddio.

Nodweddion:

* Geiriadur all-lein er mwyn chwilio ar unrhyw adeg
* Ap cyffredinol ar gyfer Android, iPad a'r iPhone
* Iaith y sgrin ar gael yn Gymraeg neu Saesneg
* Gallu dad-dreiglo a dad-redeg berfau i ddangos ffurf wreiddiol geiriau
* Nodwedd manylu er mwyn cael gwybodaeth fwy manwl ar unrhyw air
* Chwilio gyda nodau chwilio; e.e. ei ddefnyddio fel odliadur drwy chwilio am ‘*aith’ er mwyn dangos geiriau sydd yn gorffen gyda ‘aith’
* Cynnwys geiriadur Cysgair, geiriadur disgrifadol hwylus
* Cynnwys geiriadur termau Y Termiadur Addysg sydd i'w weld ar-lein ar termiaduraddysg.org; wedi'i ariannu gan Lywodraeth Cymru fel geiriadur o dermau safonol ar gyfer ysgolion a cholegau addysg bellach Cymru
* Cynnwys Geiriadur Termau'r Coleg Cymraeg Cenedlaethol; sy'n cynnwys diffiniadau, lluniau a diagramau, ac a ariannwyd gan y Coleg Cymraeg Cenedlaethol fel geiriadur o dermau safonol ar gyfer addysg uwch cyfrwng Cymraeg
* Modd chwilio'n bellach ar-lein gyda'r Porth Termau ar termau.cymru
* Diweddariadau awtomatig er mwyn ychwanegu termau a geiriau newydd wrth i'r geiriaduron sydd ynddo dyfu

Mae'r Ap Geiriaduron yn ap Prifysgol Bangor. Rhan-ariannwyd y fersiwn wreiddiol gan gynllun Go Wales. Derbyniwyd Grant Bychan gan y Coleg Cymraeg Cenedlaethol er mwyn addasu'r ap i dderbyn eu geiriadur hwy.

Datblygwyr:
Patrick Robertson, David Chan, Dewi Bryn Jones.

Golygyddion / Terminolegwyr:
Gruffudd Prys, Tegau Andrews, Delyth Prys.

What’s new

Version 170.0.0 · Updated October 30, 2025

October 2025 Update

User reviews

arshid shahid
arshid shahid
Juy
Ignotius Sparkle
Ignotius Sparkle
Excellent resource for Welsh learners.
Rhys Wiliams
Rhys Wiliams
Ap defnyddiol iawn, diolch. Un awgrym, rhoi x yn y maes chwilio fel dull o glirio'r maes chwilio yn gyflym cyn ei ail ddefnyddio, yn hytrach na gorfodi dileu lythyren wrth lythyren.
OneEyedJoe
OneEyedJoe
Perhaps the greatest app made ever.
Sophie Duckworth
Sophie Duckworth
The best welsh dictionary app! Amazing for my learning and a real authority. Thank you! I have a couple of suggestions for future development that would be really useful - ability to highlight and copy text - 'history' on the homepage showing the translations you recently looked up
Jac du
Jac du
This is very good. I am working on welsh and I have been told this is a good app by my teacher. She was definitely right about it.

Frequently asked questions

What dictionaries are included in the Ap Geiriaduron?
The Ap Geiriaduron contains the Cysgair general dictionary, Y Termiadur Addysg for schools and further education colleges, and Geiriadur Termau'r Coleg Cymraeg Cenedlaethol for universities in Wales.
Can I use the Ap Geiriaduron offline?
Yes, the Ap Geiriaduron can be used offline for anytime searches, even without an internet connection.
What features does the Ap Geiriaduron have?
The Ap Geiriaduron has an offline dictionary, both English and Welsh user interface languages, the ability to demutate and deconjugate Welsh words, a 'drill down' feature for more detailed information, wildcard Welsh searches, and access to the National Terminology Portal.
How many words are in the Cysgair Dictionary included in the Ap Geiriaduron?
The Cysgair Dictionary included in the Ap Geiriaduron has over 25,000 Welsh words and 25,000 English words.
Who developed the Ap Geiriaduron?
The Ap Geiriaduron was developed by Patrick Robertson, David Chan, and Dewi Bryn Jones.
Who are the editors and terminologists of the Ap Geiriaduron?
The editors and terminologists of the Ap Geiriaduron are Gruffudd Prys, Tegau Andrews, and Delyth Prys.

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