

The uppercase letter Ω is used as a symbol: Plaque in Kos with "underlined O" form of omega Omega was also adopted into the Latin alphabet, as a letter of the 1982 revision to the African reference alphabet. A Raetic variant is conjectured to be at the origin or parallel evolution of the Elder Futhark ᛟ. In addition to the Greek alphabet, Omega was also adopted into the early Cyrillic alphabet. The modern lowercase shape goes back to the uncial form, a form that developed during the 3rd century BC in ancient handwriting on papyrus, from a flattened-out form of the letter ( ) that had its edges curved even further upward. The name Ωμέγα is Byzantine in Classical Greek, the letter was called ō ( ὦ) (pronounced /ɔ̂ː/), whereas the omicron was called ou ( οὖ) (pronounced /ôː/). The Dorian city of Knidos as well as a few Aegean islands, namely Paros, Thasos and Melos, chose the exact opposite innovation, using a broken-up circle for the short and a closed circle for the long /o/. It is a variant of omicron (Ο), broken up at the side ( ), with the edges subsequently turned outward (, ,, ).

It was introduced in the late 7th century BC in the Ionian cities of Asia Minor to denote a long open-mid back rounded vowel. Ω was not part of the early (8th century BC) Greek alphabets. The letter omega is transliterated into a Latin-script alphabet as ō or simply o.Īs the final letter in the Greek alphabet, omega is often used to denote the last, the end, or the ultimate limit of a set, in contrast to alpha, the first letter of the Greek alphabet see Alpha and Omega. In Modern Greek, both omega and omicron represent the mid back rounded vowel IPA: or IPA.

In phonetic terms, the Ancient Greek Ω represented a long open-mid back rounded vowel IPA:, comparable to the "aw" of the English word raw in dialects without the cot–caught merger, in contrast to omicron which represented the close-mid back rounded vowel IPA:, and the digraph ου which represented the long close-mid back rounded vowel IPA. The word literally means "great O" ( ō mega, mega meaning "great"), as opposed to omicron, which means "little O" ( o mikron, micron meaning "little"). In the Greek numeric system/ isopsephy ( gematria), it has a value of 800. Omega ( / oʊ ˈ m iː ɡ ə, oʊ ˈ m ɛ ɡ ə, oʊ ˈ m eɪ ɡ ə, ə ˈ m iː ɡ ə/ capital: Ω, lowercase: ω Ancient Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and final letter in the Greek alphabet.
