Binary

Binary may refer to:

Mathematics

 * Binary number, a representation of numbers using only two digits (0 and 1)
 * Binary function, a function that takes two arguments
 * Binary operation, a mathematical operation that takes two arguments
 * Binary relation, a relation involving two elements
 * Binary-coded decimal, a method for encoding for decimal digits in binary sequences
 * Finger binary, a system for counting in binary numbers on the fingers of human hands

Computing

 * Binary code, the representation of text and data using only the digits 1 and 0
 * Bit, or binary digit, the basic unit of information in computers
 * Binary file, composed of something other than human-readable text
 * Executable, a type of binary file that contains machine code for the computer to execute
 * Binary tree, a computer tree data structure in which each node has at most two children

Astronomy

 * Binary star, a star system with two stars in it
 * Binary planet, two planetary bodies of comparable mass orbiting each other
 * Binary asteroid, two asteroids orbiting each other

Biology

 * Binary fission, the splitting of a single-celled organism into two daughter cells

Chemistry

 * Binary phase, a chemical compound containing two different chemical elements

Arts and entertainment

 * Binary (Doctor Who audio)

Marvel Comics

 * Binary, the name of two superheroines in the Marvel Universe
 * Binary (Carol Danvers), a Marvel Comics character
 * Binary (Marvel Cinematic Universe), or Maria Rambeau, a Marvel Cinematic Universe character

Music

 * Binary form, a way of structuring a piece of music
 * Binary (Ani DiFranco album), 2017
 * Binary (Kay Tse album), 2008
 * "Binary" (song), a 2007 single by Assemblage 23

Novel

 * Binary (novel), a 1972 novel by Michael Crichton (writing as John Lange)
 * Binary, an evil organization in the novel InterWorld

Other uses

 * Binary opposition, polar opposites, often ignoring the middle ground
 * Gender binary, the classification of sex and gender into two distinct and disconnected forms of masculine and feminine