18:50Hanes yr Iaith Mewn 50 GairIaithBBC Radio Cymru Duration: 5 o funudau Thu 4th May 2017, 18:50 on BBC Radio CymruAvailable for over a yearGwrando nawrIfor ap Glyn yn edrych ar darddiad a datblygiad y gair 'iaith'. Ifor ap Glyn explores iaith, the Welsh word for language.GenresFactualArts, Culture & the MediaSeriesHanes yr Iaith Mewn 50 Gair Source: BBC Online