O (disambiguation) - AbsoluteAstronomy.com

O
O
O is the fifteenth letter and a vowel in the basic modern Latin alphabet.The letter was derived from the Semitic `Ayin , which represented a consonant, probably , the sound represented by the Arabic letter ع called `Ayn. This Semitic letter in its original form seems to have been inspired by a...

is the fifteenth letter of the modern Latin alphabet.

O may also refer to:

Science and mathematics

Haplogroup O (Y-DNA)
Haplogroup O (Y-DNA)
In human genetics, Haplogroup O is a Y-chromosome DNA haplogroup. Haplogroup O is a close cladistic brother group with Haplogroup N, and is one of several descendants of Haplogroup K ....

, a Y-chromosomal DNA haplogroup
Big O notation
Big O notation
In mathematics, big O notation is used to describe the limiting behavior of a function when the argument tends towards a particular value or infinity, usually in terms of simpler functions. It is a member of a larger family of notations that is called Landau notation, Bachmann-Landau notation, or...

, used to describe the asymptotic behavior of a function or algorithm
O, chemical symbol for Oxygen
Oxygen
Oxygen is the element with atomic number 8 and represented by the symbol O. Its name derives from the Greek roots ὀξύς and -γενής , because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition...
O, a human blood type, the universal donor
O, for Orthogonal group
Orthogonal group
In mathematics, the orthogonal group of degree n over a field F is the group of n × n orthogonal matrices with entries from F, with the group operation of matrix multiplication...
o indicates function composition
Function composition
In mathematics, function composition is the application of one function to the results of another. For instance, the functions and can be composed by computing the output of g when it has an argument of f instead of x...

or composition of morphism
Morphism
In mathematics, a morphism is an abstraction derived from structure-preserving mappings between two mathematical structures. The notion of morphism recurs in much of contemporary mathematics...

s in a category
Category (mathematics)
In mathematics, a category is an algebraic structure that comprises "objects" that are linked by "arrows". A category has two basic properties: the ability to compose the arrows associatively and the existence of an identity arrow for each object. A simple example is the category of sets, whose...
O, for pyrrolysine
Pyrrolysine
Pyrrolysine is a naturally occurring, genetically coded amino acid used by some methanogenic archaea and one known bacterium in enzymes that are part of their methane-producing metabolism. It is similar to lysine, but with an added pyrroline ring linked to the end of the lysine side chain...

an alpha amino acid in biochemistry
, a category of Lie algebra
Lie algebra
In mathematics, a Lie algebra is an algebraic structure whose main use is in studying geometric objects such as Lie groups and differentiable manifolds. Lie algebras were introduced to study the concept of infinitesimal transformations. The term "Lie algebra" was introduced by Hermann Weyl in the...

representations

Arts and entertainment

O (Damien Rice album), 2002 album by Damien Rice
O (Eiko Shimamiya album), 2006 album by Eiko Shimamiya
O (Omarion album)
O (Omarion album)
-Release history:-Chart positions:-Personnel:* Joel Campbell - bass, keyboard* Carey Drisdom - bass* Bryan Tate - trumpet* Ryan Tate - trombone-Production:...

, 2005 album by Omarion
o (Tilly and the Wall album)
O (Tilly and the Wall album)
o is Tilly and the Wall's third studio album, released on June 17, 2008 through Team Love Records. The album was engineered and produced by Mike Mogis.The album was released on August 30, 2008 in Australia by Dew Process.-Content:...

, 2008 album by Tilly and the Wall
O (film)
O (film)
O is a 2001 American drama film, and a loose modern adaptation of William Shakespeare's Othello.The film's intended release date was April 1999, but due to the Columbine High School massacre, the film was shelved for two years by its original distributor, Miramax Films. Ultimately, it was sold...

, 2001 film starring Josh Hartnett, Mehki Phifer and Julia Stiles
O (Cirque du Soleil)
O (Cirque du Soleil)
O is a water-themed stage production by Cirque du Soleil, a Canadian circus and entertainment company. The show has been in permanent residence at the Bellagio in Las Vegas, Nevada, United States, since October 1998...

, show at the Bellagio hotel and casino in Las Vegas, Nevada
O, 2002 album by Zone
Zone (band)
Zone was an all-female pop rock band started in Sapporo, Japan in 1999. Although it initially started as a dance group, they turned to an all-female band. Zone has been categorized in a new genre called "bandol"...
O, fictional character from the French erotic novel Story of O
Story of O
Story of O is an erotic novel published in 1954 about love, dominance and submission by French author Anne Desclos under the pen name Pauline Réage.Desclos did not reveal herself as the author for forty years after the initial publication...
O, fictional planet that is the setting of several short stories by science fiction author Ursula K. Le Guin
Ursula K. Le Guin
Ursula Kroeber Le Guin is an American author. She has written novels, poetry, children's books, essays, and short stories, notably in fantasy and science fiction...
o, an iamamiwhoami
Iamamiwhoami
iamamiwhoami is an electronic music and multimedia project headlined by Swedish singer-songwriter Jonna Lee. Videos released from the project's YouTube channel have spread virally. The first clip was uploaded on December 4, 2009, and was forwarded to a number of music journalists and blogs. Another...

song
O: A Presidential Novel
O: A Presidential Novel
-External links:* *...

, anonymous novel published in 2011
O: The Oprah Magazine, magazine founded by Oprah Winfrey
«O»
«O»
O was the name of an international fetish magazine published in Germany by Peter W. Czernich. It was published both in German and English. The last issue, O No. 25, was published in the summer of 1995...

, an international fetish magazine

Other

O (Cyrillic)
O (Cyrillic)
O is a letter of the Cyrillic script.O commonly represents the close-mid back rounded vowel , like the pronunciation of ⟨o⟩ in "go".-History:The Cyrillic letter O was derived from the Greek letter Omicron ....

, a letter of the Cyrillic alphabet
O (kana)
O (kana)
In Japanese writing, the kana お and オ occupy the fifth place, between え and か, in the modern Gojūon system of collating kana. In the Iroha, they occupy the 27th, between の and く. In the table at right , お lies in the first column and the fifth row...

, a romanization of the kana (お and オ) in Japanese writing
ㅇ in Hangul
Hangul
Hangul,Pronounced or ; Korean: 한글 Hangeul/Han'gŭl or 조선글 Chosŏn'gŭl/Joseongeul the Korean alphabet, is the native alphabet of the Korean language. It is a separate script from Hanja, the logographic Chinese characters which are also sometimes used to write Korean...

, Korean alphabet
/o/, the International Phonetic Alphabet symbol for a close-mid back rounded vowel
O (surname), a Chinese and Japanese family name
O-class battlecruiser, class of German ships in the 1930s
Class O, stellar classification for very hot bluish stars
The O (political group)
The O (political group)
The O., short for "the Organization", also known as the C.O. or Cooperative Organization, was a Marxist-Leninist political group which grew out of the Minneapolis-Saint Paul food cooperative movement in the 1970s.-Origins:...

(The Organization), a 1970s American political group
O Brook
O Brook
The O Brook is a short tributary of the West Dart River on Dartmoor in Devon, England. It lies near the village of Hexworthy, and the lower part of the stream forms the boundary between the parishes of Holne and Dartmoor Forest...

, a short river in Devon, England
Essie's Original Hot Dog shop (commonly known as "The O"), a restaurant in Pittsburgh, Pennsylvania
O (vocative), placed before a name of, or phrase characterizing, the party being addressed in speech

Science and mathematics

Arts and entertainment

Other

See also