Binary

adj. having two parts; of or pertaining to a numbering system based on two digits; of or pertaining to the method of coding information in computers (Computers)

n. something made up of two parts

Binary means composed of two parts or two pieces.Binary may also refer to:Binary option, also known as digital option OR all-or-nothing optionBinary numeral system, a representation for numbers using only two digits (usually, 0 and 1)Binary function, a function in mathematics that takes two argumentsBinary data, composed of something other than human-readable textExecutable file, a "binary", containing machine code for the computer to executeBinary compound, a chemical compound containing two different chemical elementsBinary explosive, an explosive made of two components that become explosive when mixed.Binary (chemical weapon), containing two chemicals that when combined make a toxic agentBinary fission, the splitting of a single-celled organism into two daughter cellsBinary star, a star system with two stars in itBinary planet, two planetary bodies of comparable mass orbiting each otherBinary asteroid, two asteroids orbiting each otherBinary (novel), a 1972 novel by Michael Crichton (writing as John Lange)Binary (comics), a superheroine in the Marvel UniverseBinary form, a way of structuring a piece of musicBinary bet, a bet on a proposition which is quoted as a spread bet
See more at Wikipedia.org...

Noun
1. a system of two stars that revolve around each other under their mutual gravitation
(synonym) binary star, double star
(hypernym) star
(hyponym) Aldebaran
Adjective
1. of or pertaining to a number system have 2 as its base; "a binary digit"
(pertainym) binary numeration system, pure binary numeration system, binary number system, binary system
2. consisting of two (units or components or elements or terms) or based on two; "a binary star is a system in which two stars revolve around each other"; "a binary compound"; "the binary number system has two as its base"
(similar) multiple

(n.)
That which is constituted of two figures, things, or parts; two; duality.
  

(a.)
Compounded or consisting of two things or parts; characterized by two (things).
  

Two The prime religious and mystical meaning in the science of numeration is finite completion, involving defined limits, and hence standing in sharp contrast to the indefiniteness associated with the nonfinite or cosmic; and therefore Pythagoras and his school looked upon two as beginning the series of even numbers, each one signifying a completion or a balance, suggesting the material worlds as contrasted with the spiritual. The binary was regarded as "the origin of differentiation, hence of contrasts, discord, or matter, the beginning of evil. . . . With the early Pythagoreans, however, the duad was that imperfect state into which the first manifested being fell when it got detached from the Monad. It was the point from which the two roads -- the Good and the Evil -- bifurcated. All that which was double-faced or false was called by them 'binary' " (SD 2:574-5). It was represented geometrically as a line, because two is produced by the first motion from indivisible spiritual nature: the line also forms the tie or union between two points.
to be continue "Two2 "