• Multiplication
  Multiplication
  Multiplication is the mathematical operation of scaling one number by another. It is one of the four basic operations in elementary arithmetic ....
  
   by 2
• Look-alike
  Look-alike
  A look-alike is a person who closely resembles another person. In popular Western culture, a look-alike is a person who bears a close physical resemblance to a celebrity, politician or member of royalty. Many look-alikes earn a living by making guest appearances at public events or performing on...
  
  
• Body double
  Body double
  A body double is a general term for someone who substitutes for the credited actor of a character in any recorded visual medium, in shots where the character's body is shown but the face is either not visible or shown indistinctly, or in shots where the image of the credited actor's face is joined,...
  
  , someone who substitutes for the credited actor of a character
• Doppelgänger
  Doppelgänger
  In fiction and folklore, a doppelgänger is a paranormal double of a living person, typically representing evil or misfortune...
  
  , ghostly double of a living person
• Polish Enigma doubles
• Kamen Rider W & Kamen Rider Double (character)
  Kamen Rider Double (character)
  is the primary and eponymous protagonist of the 2009–2010 Kamen Rider Series Kamen Rider W. Kamen Rider Double's name is taken from the English word double as he is the first Kamen Rider that requires two people to transform, and his motif is that of the letter W. His debut was a cameo in the film...
  
  
• Doppio
  Doppio
  Doppio in espresso is a double shot, extracted using a double filter basket in the portafilter. This results in 60ml of drink, double the amount of a single shot espresso. More commonly called a standard double, it is a standard in judging the espresso quality in barista competitions...
  
  , a double shot of espresso
  Espresso
  Espresso is a concentrated beverage brewed by forcing a small amount of nearly boiling water under pressure through finely ground coffee. Espresso is widely known throughout the world....
  
  .

• The Double, in association football, the act of winning a country's top tier division and its primary cup competition in the same season
• Double (baseball)
  Double (baseball)
  In baseball, a double is the act of a batter striking the pitched ball and safely reaching second base without being called out by the umpire, without the benefit of a fielder's misplay or another runner being put out on a fielder's choice....
  
  , two-base hit in baseball
  • The Double (Seattle Mariners), a specific instance of the above that occurred during the 1995 Major League Baseball season
• Double, a snooker
  Snooker
  Snooker is a cue sport that is played on a green baize-covered table with pockets in each of the four corners and in the middle of each of the long side cushions. A regular table is . It is played using a cue and snooker balls: one white , 15 worth one point each, and six balls of different :...
  
   shot where the player tries to pot a ball via one cushion
• Double (cricket)
  Double (cricket)
  A cricketer is said to achieve the double if he scores a thousand or more runs and also takes a hundred or more wickets in first-class matches during the course of a single season. The feat is extremely rare outside England because of the smaller number of first-class matches played in most other...
  
  , the feat of scoring a thousand first-class runs and taking a hundred first-class wickets in a single season
• The Double (Gaelic games)
  The Double (Gaelic games)
  The Double is a term in Gaelic games that refers to a county winning the All-Ireland Senior Football Championship and the All-Ireland Senior Hurling Championship in the same year. Other major trophies won in combination in the same year at minor or under-21 levels are also often referred to as...
  
  , the act of winning the All-Ireland Senior Football Championship and the All-Ireland Senior Hurling Championship in the same year
• The Double (auto racing), in auto racing, the act of a driver attempting to race in two races on the same day during the United States Memorial Day weekend.

• Double, action in games such as bridge
  Contract bridge
  Contract bridge, usually known simply as bridge, is a trick-taking card game using a standard deck of 52 playing cards played by four players in two competing partnerships with partners sitting opposite each other around a small table...
  
   and backgammon
  Backgammon
  Backgammon is one of the oldest board games for two players. The playing pieces are moved according to the roll of dice, and players win by removing all of their pieces from the board. There are many variants of backgammon, most of which share common traits...
  
   whereby a competitor raises the stakes
• Double, villain in the video game Mega Man X4
  Mega Man X4
  Mega Man X4, known as , is a video game developed by Capcom. It is the fourth game in the Mega Man X series and the second game in the series to be released on the Sega Saturn and PlayStation. The two versions were released simultaneously in Japan on August 1, 1997...
  
  
• In dancing games like Dance Dance Revolution
  Dance Dance Revolution
  Dance Dance Revolution, abbreviated DDR, and previously known as Dancing Stage in Europe and Australasia, is a music video game series produced by Konami. Introduced in Japan in 1998 as part of the Bemani series, and released in North America and Europe in 1999, Dance Dance Revolution is the...
  
  or In the Groove (game)
  In the Groove (game)
  In the Groove is the first game in the In the Groove franchise, published and developed by Roxor Games, and first released in video arcades around August 30, 2004.-Gameplay:...
  
  , a mode of play in which a single player uses twice as many pads as normal

• Double (singer)
  Double (singer)
  Double is the stage name for Japanese R&B singer . Double used to be the name for the two member R&B group consisting of Takako and her sister Sachiko. After the death of her sister in May 1999, Takako started her solo career adopting Double as her stage name...
  
  , a Japanese R&B singer.
• Double (band)
  Double (band)
  Double was a Swiss music duo best remembered for their hit single "The Captain of Her Heart".-Biography:Double formed in 1983 in Zürich, Switzerland by Felix Haug and Kurt Maloo out of the trio Ping Pong of which both Maloo and Haug were members...
  
  , Swiss pop duo that had their biggest hit in 1986 with "Captain of Her Heart"
• Double (Roch Voisine album)
  Double (Roch Voisine album)
  Double is a 1990 bilingual French / English double album by Canadian singer Roch Voisine as a follow up to the album Hélène. The first CD is all in French, the second all in English. The English tracks were also released as a separate album entitled Roch Voisine.-Album information:The album was...
  
  , a 1990 album by Roch Voisine
• Double (Zhao Wei album)
  Double (Zhao Wei album)
  Double 双 is a 2005 album by mainland Chinese pop singer Zhao Wei. Its first single, "Still Time for Tomorrow" was the theme song for UNICEF's "Attention for Children Affected by AIDS" campaign .The first week sold more than 150,000 in mainland China....
  
  , a 2005 album by Zhao Wei
• Double variation
  Double variation
  The double variation is a musical form used in classical music. It is a type of theme and variations that employs two themes. In a double variation set, a first theme is followed by a second theme , followed by a variation on A, then a variation on B, and so on with alternating A and B...
  
  , a variation form in music
• The Double Violin Concerto (Bach)
  Double Violin Concerto (Bach)
  The Concerto for 2 Violins, Strings and Continuo in D Minor, BWV 1043, also known as the Double Violin Concerto or "Bach Double", is perhaps one of the most famous works by J. S. Bach and considered among the best examples of the work of the late Baroque period. Bach wrote it between 1730 and 1731...
  
   in D minor, BWV 1043, commonly referred to as "The Double" among violinists
• Doubling (music)

• The Double: A Petersburg Poem
  The Double: A Petersburg Poem
  The Double: A Petersburg Poem is a novella written by Fyodor Dostoyevsky. The novella was first published on January 30, 1846 in Fatherland Notes....
  
  , a novella by Fyodor Dostoevsky
  Fyodor Dostoevsky
  Fyodor Mikhaylovich Dostoyevsky was a Russian writer of novels, short stories and essays. He is best known for his novels Crime and Punishment, The Idiot and The Brothers Karamazov....
  
  
• The Double (novel)
  The Double (novel)
  The Double is a 2001 novel by Portuguese author José Saramago.-Plot summary:Tertuliano Máximo Afonso is a divorced high school history teacher who spends his nights reading about Mesopotamian civilizations. One day, at a colleague's suggestion, Tertuliano rents a movie in which he sees a man that...
  
  , a novel by José Saramago
  José Saramago
  José de Sousa Saramago, GColSE was a Nobel-laureate Portuguese novelist, poet, playwright and journalist. His works, some of which can be seen as allegories, commonly present subversive perspectives on historic events, emphasizing the human factor. Harold Bloom has described Saramago as "a...
  
  
• The Doubles, a novella by E.T.A. Hoffmann
  E.T.A. Hoffmann
  Ernst Theodor Wilhelm Hoffmann , better known by his pen name E.T.A. Hoffmann , was a German Romantic author of fantasy and horror, a jurist, composer, music critic, draftsman and caricaturist...
  
  

• Double, a bet which combines two selections
• Double, former fraction of the Guernsey pound
  Guernsey pound
  The pound is the currency of Guernsey. Since 1921, Guernsey has been in currency union with the United Kingdom and the Guernsey pound is not a separate currency but is a local issue of banknotes and coins denominated in pound sterling, in a similar way to the banknotes issued in Scotland and...
  
  
• Double precision
  Double precision
  In computing, double precision is a computer number format that occupies two adjacent storage locations in computer memory. A double-precision number, sometimes simply called a double, may be defined to be an integer, fixed point, or floating point .Modern computers with 32-bit storage locations...
  
  , in computing a representation of numbers in floating-point format that is typically 64 bits in length.
• Double number
  Split-complex number
  In abstract algebra, the split-complex numbers are a two-dimensional commutative algebra over the real numbers different from the complex numbers. Every split-complex number has the formwhere x and y are real numbers...
  
  , a mathematical construct similar to a complex number
• Dubbel
  Dubbel
  The dubbel is a Belgian Trappist beer naming convention. The origin of the dubbel was a beer brewed in the Trappist Abbey of Westmalle in 1856. The abbey had, since 10 December 1836, brewed a witbier that was quite sweet and light in alcohol for consumption by the paters. The new beer, however,...
  
  , a type of beer
• The Double (1963 film), a 1963 British thriller film
• The Double (film)
  The Double (film)
  The Double is a 2011 spy film, starring Richard Gere and Topher Grace, released on October 28, 2011.-Plot:A retired CIA operative is paired with a young FBI agent to unravel the mystery of a senator's murder, with all signs pointing to a Soviet assassin....
  
  , an upcoming 2011 political thriller film

See also

• Doubles (disambiguation)
• Doubling (disambiguation)
• Duplication (disambiguation)
• Single (disambiguation)