Binary may refer to:

Science and technology

Mathematics

Binary number A binary number is a number expressed in the base-2 numeral system or binary numeral system, a method of mathematical expression which uses only two symbols: typically "0" (zero) and "1" ( one). The base-2 numeral system is a positional notation ...

, a representation of numbers using only two digits (0 and 1) *

Binary function In mathematics, a binary function (also called bivariate function, or function of two variables) is a function that takes two inputs. Precisely stated, a function f is binary if there exists sets X, Y, Z such that :\,f \colon X \times Y \righ ...

, 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, an internal binary op ...

, a mathematical operation that takes two arguments *

Binary relation In mathematics, a binary relation associates elements of one set, called the ''domain'', with elements of another set, called the ''codomain''. A binary relation over sets and is a new set of ordered pairs consisting of elements in and i ...

, a relation involving two elements *

Binary-coded decimal In computing and electronic systems, binary-coded decimal (BCD) is a class of binary encodings of decimal numbers where each digit is represented by a fixed number of bits, usually four or eight. Sometimes, special bit patterns are used fo ...

, a method for encoding for decimal digits in binary sequences *

Finger binary Finger binary is a system for counting and displaying binary numbers on the fingers of either or both hands. Each finger represents one binary digit or bit. This allows counting from zero to 31 using the fingers of one hand, or 1023 using both: t ...

, a system for counting in binary numbers on the fingers of human hands

Computing

Binary code A binary code represents text, computer processor instructions, or any other data using a two-symbol system. The two-symbol system used is often "0" and "1" from the binary number system. The binary code assigns a pattern of binary digits, also ...

, the digital representation of text and data *

Bit The bit is the most basic unit of information in computing and digital communications. The name is a portmanteau of binary digit. The bit represents a logical state with one of two possible values. These values are most commonly represented ...

, or binary digit, the basic unit of information in computers *

Binary file A binary file is a computer file that is not a text file. The term "binary file" is often used as a term meaning "non-text file". Many binary file formats contain parts that can be interpreted as text; for example, some computer document file ...

, composed of something other than human-readable text **

Executable In computing, executable code, an executable file, or an executable program, sometimes simply referred to as an executable or binary, causes a computer "to perform indicated tasks according to encoded instructions", as opposed to a data fil ...

, a type of binary file that contains machine code for the computer to execute *

Binary tree In computer science, a binary tree is a k-ary k = 2 tree data structure in which each node has at most two children, which are referred to as the ' and the '. A recursive definition using just set theory notions is that a (non-empty) binary tr ...

, a computer tree data structure in which each node has at most two children

Astronomy

Binary star A binary star is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen as a single object to the naked eye are often resolved using a telescope as separate stars, in w ...

, a star system with two stars in it *

Binary planet In astronomy, a double planet (also binary planet) is a binary satellite system where both objects are planets, or planetary-mass objects, that share an orbital axis external to both planetary bodies. Although up to a third of the star syst ...

, two planetary bodies of comparable mass orbiting each other *

Binary asteroid A binary asteroid is a system of two asteroids orbiting their common barycenter. The binary nature of 243 Ida was discovered when the Galileo spacecraft flew by the asteroid in 1993. Since then numerous binary asteroids and several triple ast ...

, two asteroids orbiting each other

Biology

Binary fission Binary may refer to: Science and technology 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 ta ...

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

Chemistry

Binary phase In materials chemistry, a binary phase or binary compound is a chemical compound containing two different elements. Some binary phase compounds are molecular, e.g. carbon tetrachloride (CCl4). More typically binary phase refers to extended soli ...

, a chemical compound containing two different chemical elements

Arts and entertainment

Binary (comics) Carol Susan Jane Danvers is a character appearing in American comic books published by Marvel Comics. Created by writer Roy Thomas and artist Gene Colan, Danvers first appeared as an officer in the United States Air Force and a colleague of the ...

, a superheroine in the Marvel Universe * ''Binary'' (Doctor Who audio)

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 period, ofte ...

, 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 ''InterWorld'' is a fantasy and science fiction novel by Neil Gaiman and Michael Reaves. The book was published in 2007 by EOS, an imprint of HarperCollins Publishers. It follows the story of Joey Harker who, together with a group of other Joe ...

Other uses

Binary opposition A binary opposition (also binary system) is a pair of related terms or concepts that are opposite in meaning. Binary opposition is the system of language and/or thought by which two theoretical opposites are strictly defined and set off against one ...

, 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