Binary may refer to:

Science and technology

Mathematics

Binary number A binary number is a number expressed in the Radix, base-2 numeral system or binary numeral system, a method for representing numbers that uses only two symbols for the natural numbers: typically "0" (zero) and "1" (one). A ''binary number'' may ...

, a representation of numbers using only two values (0 and 1) for each digit * Binary function, a function that takes two arguments *

Binary operation In mathematics, a binary operation or dyadic operation is a rule for combining two elements (called operands) to produce another element. More formally, a binary operation is an operation of arity two. More specifically, a binary operation ...

, a mathematical operation that takes two arguments * Binary relation, a relation involving two elements * 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 In computer science, a binary tree is a tree data structure in which each node has at most two children, referred to as the ''left child'' and the ''right child''. That is, it is a ''k''-ary tree with . A recursive definition using set theor ...

, a computer tree data structure in which each node has at most two children * Binary-coded decimal, a method for encoding for decimal digits in binary sequences

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 Binary form is a musical form in 2 related sections, both of which are usually repeated. Binary is also a structure used to choreograph dance. In music this is usually performed as A-A-B-B. Binary form was popular during the Baroque music, Baro ...

, 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 gender into two distinct and disconnected forms of masculine and feminine