Definition (disambiguation)

A definition is a statement of the meaning of a term.

Definition may also refer to:

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 (physical chemistry), physico-chemical quantities defined in terms of others, in the form of an equation
 * Dynamical system (definition), description of a mathematical model, determined by a system of coupled differential equations
 * Circular definition, lexicographic, linguistic and logical aspects
 * Mathematics:
 * Intensional definition
 * Elementary definition
 * Algebraic definition
 * Recursive definition
 * Field of definition
 * A continuous function
 * A well-defined function

Music and TV

 * High-definition television, a television format with higher resolution
 * Definition (album), a 1992 studio album by American crossover thrash band Dirty Rotten Imbeciles
 * Definition (TV series), a long-running Canadian game show of the 1970s and 1980s
 * Definition (Jersey EP), 2001
 * Definition (Diaura EP), 2019
 * "Definition" (song), a 1998 song by Black Star
 * "Definition", a song by Mabel from About Last Night..., 2022
 * "Definitions" (How I Met Your Mother), a 2009 television episode

Other

 * #define, a macro in the C programming language
 * Defined (album), a 2005 operatic pop album
 * Definitions (Plato), a dictionary of about 185 philosophical terms sometimes included in the corpus of Plato's works
 * Dogmatic definition, the pronunciation of religious doctrine by a Pope or an ecumenical council