is omega the last letter of the greek alphabet
Omega (capital: Ω, lowercase: ω; Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the 24th and last letter of the Greek alphabet. In the Greek numeric system, it has a value of 800. The word literally means ``great O'' (ō mega, mega meaning ``great''), as opposed to omicron, which means ``little O'' (o mikron, micron meaning ``little'').
Omega