Information for Coleg Cymraeg Staff and Students
There is a free app available which gives full access to Geiriadur Prifysgol Cymru (GPC), the historical dictionary which is the Welsh equivalent of the Oxford English Dictionary. This is an enormous work of more than 9 million words in all. It is essential for everyone studying Welsh and its rich literature, and is also very useful in many other subjects.
It gives definitions in Welsh as well as English synonyms, together with citations showing the use of the word through the centuries. Common phrases containing the headword are listed, including a number of technical terms. A great advantage of the electronic version is that English words can be searched for in the Dictionary, which is impossible in the printed volumes. Phrases and parts of words can be searched for using wildcards. Help is available with the spelling of words: if a word is not found, a list of similar words is offered. All the mutated forms of a word are also shown in the search results, so searching for ‘cefn’ will also find ‘ar gefn ei geffyl’.
GPC is considered to be the standard for word spelling, plural forms, the gender of nouns, etc. All the information in the Dictionary is based on a corpus of real examples of use.
Since June 2014 GPC Online has been available over the Internet. There is also an app available for your phone or tablet (Apple or Android).
The app is quick and convenient. It contains a help section which includes advice on how to cite the Dictionary in your academic work.
You can download the app by clicking on the Apple App Store or Google Play icon here or by scanning the QR code with your device:
App Support:
For user tips and answers to FAQ’s please click here or on the App Support link in the menu on the right.
Find out more:
More information about Geiriadur Prifysgol Cymru is available on the Coleg Cymraeg Cenedlaethol website in Y Porth in:
Ysgrifau ar Ieithyddiaeth a Geiriaduraeth Gymraeg, ed. Delyth Prys (2014), chapter IV: ‘Geiriadur Prifysgol Cymru: Ar Seiliau Cadarn? Geiriaduron Hanesyddol, Disgrifiadol, a Rhagnodol’ by Andrew Hawke.
Ysgrifau a Chanllawiau Cyfieithu, eds. Delyth Prys and Robat Trefor, chapter 3: ‘Geiriaduron, termiaduron ac adnoddau defnyddiol eraill’ by Delyth Prys.
For vocabulary specific to a particular field of study, the Ap Geiriaduron by Canolfan Bedwyr will be useful as well as the Welsh National Terminology Portal.
The app was developed with financial support from the Welsh Government.










