Mobile and E-book Dictionaries

The app version of the Termiadur Addysg is available for FREE from the App StoreGoogle Play and the Amazon App Store.


Android Version (above)

iOS Version ( iPhone / iPad / iPod )

The Termiadur Addysg app gives you offline access to thousands of English and Welsh words ‘Y Termiadur Addysg’.


  • Realtime, responsive and adaptive dictionary searching
  • Offline dictionary access for anytime searches
  • English and Welsh user interface
  • ‘Drill down’ feature to find more detailed information on specific words
  • Provides a gateway to for expanded searches

Created by Patrick Robertson, David Chan, Gruffudd Prys, Dewi Jones, Delyth Prys and other members of the Language Technologies Unit, Canolfan Bedwyr.

The ‘Termiadur Addysg’ dictionary is also available as part of ‘Ap Geiriaduron’ ( iOSAndroid ), a dictionary app containing multiple Welsh-English dictionaries.

  • Random Term

      cyflymder perthynol eg
      relative velocity