Where does “hydoddyddion” come from?

hydoddyddion (Welsh) comes from Welsh hydoddydd, from Welsh hydoddi, from Welsh toddi, from Welsh tawdd — molten, melted.

Ancestry of “hydoddyddion”, step by step

StepLanguageWordMeaning
1Welshhydoddyddsolvent
2Welshhydoddito dissolve
3Welshtoddito melt
4Welshtawddmolten, melted
Every word from Welsh tawdd →Every word from Welsh toddi →Every word from Welsh hydoddi →