1 the ending of a series or sequence; "the Alpha and the Omega, the first and the last, the beginning and the end"--Revelation [syn: Z]
2 the last (24th) letter of the Greek alphabet
- The twenty-fourth letter of the Classical and the Modern Greek alphabet, and the twenty-eighth letter of the Old and the Ancient Greek alphabet, i.e. the last letter of every Greek alphabet. Uppercase version: Ω; lowercase: ω.
- The end; death.
- I am the Alpha and the Omega, the First and the Last, the Beginning and the End. — Revelation 22:13, New International Version.
letter of the Greek alphabet
the end; death
- German: O
Omega (uppercase Ω, lowercase ω) 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"). This name is Byzantine; in Classical Greek, the letter was called ō (), whereas the Omicron was called ou (). The form of the lowercase letter derives from a double omicron, which came to be written open at the top.
Phonetically, the Ancient Greek Ω is a long open-mid o [ɔː], similar to the vowel of English raw in certain dialects such as RP where this word is pronounced [ɹɔː]. It should not be confused with the sound of English so-called "long o" as in ocean, which is either diphthongal [oʊ] or [əʊ] or a close-mid kind of "o" [o], in either case distinctly different from the "long o" sound of Greek omega and closer to the Classical Greek sound represented by ου before this came to be pronounced [u]. In Modern Greek Ω represents the same sound as omicron. The letter omega is transcribed ō or simply o.
Omega (the last letter of the Greek alphabet) 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. In the New Testament book of Revelation, God is declared to be the "alpha and omega, the beginning and the end, the first and the last".
Omega was also adopted into the early Cyrillic alphabet. See omega (Cyrillic) (Ѡ, ѡ). A Raetic variant is at the origin of Elder Futhark ᛟ.
The symbol Ω (upper case letter)
The upper-case letter Ω is used as a symbol, it is also used often outside its Greek alphabetical context in literature, advertising and other forms of human expression.
- in physics:
- For ohm — SI unit of electrical resistance; formerly also used upside down (℧) to represent mho, the old name for the inverse of an ohm (now siemens with symbol S) used for electrical conductance. Unicode has a separate code point for the ohm sign (U+2126, Ω), but it is only included for backwards compatibility and the Greek uppercase omega character (U+03A9, Ω) is preferred.
- The solid angle or the rate of precession in a gyroscope.
- In particle physics to represent the Omega baryons.
- In mathematics/computer science:
- In mathematics
- In complex analysis, the Omega constant, a solution of Lambert's W function
- A variable for a 2-dimensional region in calculus, usually corresponding to the domain of a double integral.
- In set theory, the first uncountable ordinal number (also known as ω1)
- In combinatory logic, the looping combinator, (λ x. x x) (λ x. x x)
- In statistics, it is used as the symbol for the sample space, or total set of possible outcomes.
- In astronomy (cosmology) Ω refers to the density of the universe, also called the density parameter.
- The symbol of the Resistance Movement against the Vietnam-era draft
- Year or date of death
- In God of War (video game), Incorporated into the logo design.
- The logo of Omega Watches SA.
- In Warhammer 40,000, the Space Marine chapter "Ultramarines" uses an upside-down variation of it.
The symbol ω (lower-case letter)
The lower-case letter ω is used as a symbol:
- In textual criticism, the archetype of a manuscript tradition
- In physics, angular velocity and angular frequency
- In mathematics, the first transfinite ordinal number, often identified with the set of natural numbers including 0
- In number theory, an arithmetic function
- In combinatory logic, the self-application combinator, (λ x. x x)
- In computer science, in notation related to Big O notation, the asymptotically dominant nature of functions
- In astronomy, as a ranking of a star's brightness
- In particle physics to represent the omega meson
- In linguistics, the phonological word
- In circuit analysis and signal processing to represent natural frequency, related to frequency f by ω = 2πf.
- In biochemistry to denote the carbon atom furthest from the carboxyl group of a fatty acid.
- Used in place of ん in Japanese typing shorthand.
- In relational database theory ω is used to represent NULL, a missing or inapplicable value.
- In phonology, for a prosodic (or phonological) word.
- In biochemistry, for one of the RNA Polymerase subunits.
- In genomics, as a measure of evolution at the protein level.
omega in Tosk Albanian: Ω
omega in Arabic: أوميغا (حرف إغريقي)
omega in Official Aramaic (700-300 BCE): Ω
omega in Asturian: Omega
omega in Breton: Omega (lizherenn)
omega in Bulgarian: Омега
omega in Catalan: Omega
omega in Welsh: Omega
omega in Danish: Omega (bogstav)
omega in German: Omega
omega in Modern Greek (1453-): Ωμέγα
omega in Spanish: Ω
omega in Esperanto: Omego
omega in Basque: Omega
omega in French: Oméga
omega in Scottish Gaelic: Omega
omega in Galician: Omega
omega in Korean: Ω
omega in Croatian: Omega
omega in Indonesian: Omega
omega in Icelandic: Ómega
omega in Italian: Omega (lettera)
omega in Hebrew: אומגה
omega in Georgian: ომეგა (ასო)
omega in Swahili (macrolanguage): Omega
omega in Haitian: Ω
omega in Kurdish: Omega
omega in Latin: Omega
omega in Lithuanian: Omega (raidė)
omega in Hungarian: Ómega
omega in Malay (macrolanguage): Omega
omega in Dutch: Omega (letter)
omega in Japanese: Ω
omega in Norwegian: Omega
omega in Norwegian Nynorsk: Omega
omega in Low German: Omega
omega in Polish: Omega
omega in Portuguese: Ω
omega in Russian: Омега (буква)
omega in Simple English: Omega
omega in Slovak: Ómega
omega in Slovenian: Omega
omega in Serbo-Croatian: Omega
omega in Finnish: Oomega
omega in Swedish: Omega
omega in Thai: โอเมกา
omega in Turkish: Omega (alfabe)
omega in Ukrainian: Омега (літера)
omega in Chinese: Ω
Z, apodosis, catastrophe, ceasing, cessation, coda, conclusion, consummation, crack of doom, culmination, curtain, curtains, death, decease, denouement, destination, destiny, doom, effect, end, end point, ending, envoi, epilogue, eschatology, expiration, fate, final solution, final twitch, final words, finale, finality, finis, finish, goal, izzard, last, last breath, last gasp, last things, last trumpet, last words, latter end, payoff, period, peroration, quietus, resolution, resting place, stoppage, stopping place, swan song, term, terminal, termination, terminus, windup