Science, mathematics and computing

• In computer programming languages, a declaration that reserves memory for a variable or gives the body of a subroutine
• Defining equation (physics)
  Defining equation (physics)
  In physics, defining equations are equations that define new quantities in terms of base quantities. This article uses the current SI system of units, not natural or characteristic units.-Treatment of vectors:There are many forms of vector notation...
  
  , physical quantities defined in terms of others, in the form of an equation
• Defining equation (physical chemistry)
  Defining equation (physical chemistry)
  In physical chemistry, there are numerous quantities associated with chemical compounds and reactions; notably in terms of amounts of substance, activity or concentration of a substance, and the rate of reaction. This article uses SI units....
  
  , physico-chemical quantities defined in terms of others, in the form of an equation
• Dynamical system (definition)
  Dynamical system (definition)
  The dynamical system concept is a mathematical formalization for any fixed "rule" which describes the time dependence of a point's position in its ambient space...
  
  , description of a mathematical model, determined by a system of coupled differential equations

Music and TV

• Definition (album)
  Definition (album)
  Definition is the sixth album by the American crossover thrash band D.R.I., which was released in 1992.-Track listing:# "Acid Rain" – 4:31# "Tone Deaf" – 2:28# "Guilt Trip" – 4:33# "Hardball" – 3:20# "The Application" – 4:25...
  
  , a 1992 studio album by American crossover thrash band Dirty Rotten Imbeciles
• Definition (TV series)
  Definition (TV series)
  Definition was a Canadian television game show, which aired on CTV from 1974 to 1989, and filmed at its flagship studio of CFTO-TV in the former Scarborough, Ontario . For most of its run, it was hosted by Jim Perry....
  
  , a long-running Canadian game show of the 1970s and 1980s
• Definition (EP), a 2001 EP by punk rock band Jersey
• Definition (song)
  Definition (song)
  "Definition" is the first single from Black Star's eponymously titled 1998 album . It is produced by Hi-Tek, who samples "The P Is Free" by Boogie Down Productions for the track's beat. In addition, the song's chorus interpolates "Stop the Violence" by Boogie Down Productions...
  
  , a 1998 song by Black Star
• Defined (album)
  Defined (album)
  Defined is an album by popera group Amici Forever released in 2005.-Track listing:#"La Fiamma Sacra "#"Nella Fantasia"#"The Prayer"#"Aranjuez Ma Pensee"#"So Far Away"#"Nostalgia "#"Core'ngrato "...
  
  , a 2005 operatic pop album
• Definitions (How I Met Your Mother)
  Definitions (How I Met Your Mother)
  "Definitions" is the first episode of the fifth season of the How I Met Your Mother TV series and 89th episode overall. It originally aired on September 21, 2009.- Plot :...
  
  , a 2009 television episode

Other

• Definitions (Plato)
  Definitions (Plato)
  The Definitions is a dictionary of about 185 philosophical terms sometimes included in the corpus of Plato's works. Plato is generally not regarded as the editor of all of Definitions. Some ancient scholars attributed Definitions to Speusippus....
  
  , a dictionary of about 185 philosophical terms sometimes included in the corpus of Plato's works
• Dogmatic definition
  Dogmatic definition
  In Catholicism, a dogmatic definition is an extraordinary infallible statement published by a pope or an ecumenical council concerning a matter of faith or morals, the belief in which the Catholic Church requires of all Christians .The term most often refers to the infallible...
  
  , the pronunciation of religious doctrine by a Pope or an ecumenical council