# Binary number

consisting of, indicating, or involving two.

Mathematics.

of or relating to a system of numerical notation to the base 2, in which each place of a number, expressed as 0 or 1, corresponds to a power of 2. The decimal number 58 appears as 111010 in binary notation, since 58 = 1 × 2 5 + 1 × 2 4 + 1 × 2 3 + 0 × 2 2 + 1 × 2 1 + 0 × 2 0 .

of or relating to the digits or numbers used in binary notation.

of or relating to a binary system.

(of an operation) assigning a third quantity to two given quantities, as in the addition of two numbers.

Computers. of, relating to, or written in binary code; programmed or encoded using only the digits 0 and 1:

All executable programs on the computer are stored in binary files.

Chemistry. noting a compound containing only two elements or groups, as sodium chloride, methyl bromide, or methyl hydroxide.

Metallurgy. (of an alloy) having two principal constituents.

a whole composed of two.

Mathematics. a system of numerical notation to the base 2, in which each place of a number, expressed as 0 or 1, corresponds to a power of 2:

to convert decimal to binary.

Also called binary number. Mathematics. a number expressed in the binary system of notation.

Computers. binary code.

Computers. an executable file stored in binary format.

Astronomy, binary star.

Historical *Examples*

The Number Concept Levi Leonard Conant

Essays and Miscellanies Plutarch

**noun**

a number expressed in binary notation, as 1101.101 = 1 × 2³ + 1 × 2² + 0 × 21 + 1 × 20 + 1 × 2–1 + 0 × 2–² + 1 × 2–³ = 13 5/8

**adjective**

composed of, relating to, or involving two; dual

(maths, computing) of, relating to, or expressed in binary notation or binary code

(of a compound or molecule) containing atoms of two different elements

(metallurgy) (of an alloy) consisting of two components or phases

(of an educational system) consisting of two parallel forms of education such as the grammar school and the secondary modern in Britain

(maths, logic) (of a relation, expression, or operation) applying to two elements of its domain; having two argument places; dyadic

**noun** (pl) -ries

something composed of two parts or things

(astronomy) See binary star

short for binary weapon

**noun**

*Examples*

Usage Note

**adj.**

binary

(bī’nə-rē)

binary [(beye-nuh-ree, beye-ner-ee)]

Tagged: b

Read Also:

- Binary number system
binary number system binary number system A method of representing numbers that has 2 as its base and uses only the digits 0 and 1. Each successive digit represents a power of 2. For example, 10011 represents (1 × 24) + (0 × 23) + (0 × 22) + (1 × 21) + (1 × […]

- Binary package
binary package software An archive file that contains all files and directories that must be installed in order to make a working installation of the program(s) included in the package, and the maintainer scripts necessary for the installation. A binary package is usually specific to a certain platform, in contrast to a source package. (2001-01-27)

- Binary search
binary search algorithm A search algorithm which repeatedly divides an ordered search space in half according to how the required (key) value compares with the middle element. The following pseudo-C routine performs a binary search return the index of the element of vector “thing[first..last]” equal to “target”: if (target thing[last]) return NOT_FOUND; while (first mid […]

- Binary synchronous transmission
binary synchronous transmission protocol (Bisynch) An IBM link protocol, developed in the 1960 and popular in the 1970s and 1980s. Binary Synchronous Transmission has been largely replaced in IBM environments with SDLC. Bisync was developed for batch communications between a System 360 computer and the IBM 2780 and 3780 Remote Job Entry (RJE) terminals. It […]