The University of Wales Dictionary of the Welsh Language (GPC)Oabject LanguageWelshMETALANGAUGEWelsh, EnglishGENREGeneral dictionars, Historical dictionars, Etymological dictionarshttps://geiriadur.ac.uk/gpc/gpc.html
University of Wales Trinity St David Welsh-English / English-Welsh On-line DictionaryOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENREGeneral dictionars, Learner's dictionarshttp://geiriadur.uwtsd.ac.uk/index.php
Online version of Cysgair and the Termiadur AddysgOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENREPortals an aggregators, General dictionars, Learner's dictionarshttp://geiriadur.bangor.ac.uk/
Geiriadur Rhywogaethau / A Dictionary of SpeciesOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENREDictionars oan special topics, Terminological dictionarieshttps://www.llennatur.cymru/Y-Bywiadur
Coleg Cymraeg Cenedlaethol Terms for Higher EducationOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENRETerminological dictionarieshttps://colegcymraeg.ac.uk/termau/
Y porth i adnoddau Gwasanaeth Cyfieithu Llywodraeth Cymru / Portal for the Welsh Government Translation Service’s resourcesOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENRETerminological dictionarieshttps://llyw.cymru/bydtermcymru
Welsh National Terminology PortalOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENRETerminological dictionaries, Portals an aggregatorshttp://termau.cymru
Standardized terminology for the field of educationOabject LanguageWelshMETALANGAUGEWelsh, EnglishGENRETerminological dictionarieshttp://www.termiaduraddysg.org/