► Details Suggestions (1) External Siencyn (hwn) noun masculine in English is: Jenkin Sign in or Register to see the full entries from the Welsh-English section of the dictionary which includes definitions, translations, pronunciation, phrases, grammar, mutations, conjugated verbs, prepositions, adjectives and more. were you looking for siencyn? External Dictionary Portal This is a library of dictionaries and other online resources where you can search further for Siencyn*: Biography Siencyn in the Dictionary of Welsh Biography Specialist Dictionaries Siencyn in the University of Wales Dictionary Glossaries Siencyn in the Bangor Dictionary Siencyn in the Trinity Saint David Dictionary Terminology Siencyn in the National Terminology Portal Siencyn in Term Cymru Siencyn in the Termiadur Addysg Siencyn in the Coleg Cymraeg's Terms Encyclopedia Siencyn in Wicipedia (Welsh) Example Sentences Sentences containing: Siencyn in the Assembly Proceedings Siencyn in the CorCenCC Corpus *External websites will be opened in a new window.