Iodhadh

Ogham letters
᚛ᚑᚌᚐᚋᚁᚂᚃᚓᚇᚐᚅ᚜
Aicme Beithe
᚛ᚐᚔᚉᚋᚓᚁᚂᚃᚄᚅ᚜
Aicme Muine
᚛ᚐᚔᚉᚋᚓᚋᚌᚎᚏ᚜
[b] Beith [m] Muin
[l] Luis [ɡ] Gort
[w] Fearn [ɡʷ] nGéadal
[s] Sail [st], [ts], [sw] Straif
[n] Nion [r] Ruis
Aicme hÚatha
᚛ᚐᚔᚉᚋᚓᚆᚇᚈᚉᚊ᚜
Aicme Ailme
᚛ᚐᚔᚉᚋᚓᚐᚑᚒᚓᚔ᚜
[j] Uath [a] Ailm
[d] Dair [o] Onn
[t] Tinne [u] Úr
[k] Coll [e] Eadhadh
[kʷ] Ceirt [i] Iodhadh
Forfeda
᚛ᚃᚑᚏᚃᚓᚇᚐ᚜
[ea], [k], [x], [eo] Éabhadh
[oi] Ór
[ui] Uilleann
[ia] Ifín
[x], [ai] Eamhancholl
[p] Peith

Iodhadh is the Irish name of the twentieth letter of the Ogham alphabet, . In Old Irish, the letter name was idad. Its phonetic value is [i]. The original meaning of the letter name is uncertain, but it is likely an artificially altered pair with edad, much like Gothic pairþra, qairþra, and may refer to "yew".