(n)omega, Zthe ending of a series or sequence“the Alpha and the Omega, the first and the last, the beginning and the end” (The Bible, Revelations 22:13)
(n)Z, z, zee, zed, ezed, izzardthe 26th letter of the Roman alphabet“the British call Z zed and the Scots call it ezed but Americans call it zee”, “he doesn't know A from izzard”