For example, experts have been developing the University of Wales Dictionary since 1921, and it has developed into the foundation for all other work on words and terms in Wales.
Er enghraifft, mae arbenigwyr wedi bod yn datblygu Geiriadur Prifysgol Cymru ers 1921, ac mae wedi datblygu i fod yn sylfaen ar gyfer yr holl waith arall ar eiriau a thermau yng Nghymru.