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binary

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bi⋅na⋅ry

  [bahy-nuh-ree, -ner-ee] adjective, noun, plural -ries.
Use binary in a Sentence
–adjective
1. consisting of, indicating, or involving two.
2. Mathematics.
a. of or pertaining 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 × 25 + 1 × 24 + 1 × 23 + 0 × 22 + 1 × 21 + 0 × 20.
b. of or pertaining to the digits or numbers used in binary notation.
c. of or pertaining to a binary system.
d. (of an operation) assigning a third quantity to two given quantities, as in the addition of two numbers.
3. Chemistry. noting a compound containing only two elements or groups, as sodium chloride, methyl bromide, or methyl hydroxide.
4. Metallurgy. (of an alloy) having two principal constituents.
–noun
5. a whole composed of two.
6. Astronomy. binary star.
7. Also called binary number. Mathematics. a number expressed in the binary system of notation.
Origin:
1350–1400; ME < LL bīnārius, equiv. to bīn(ī) (see bin- ) + -ārius -ary
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binary star

 
–noun Astronomy.
a system of two stars that revolve about their common center of mass.
Also called binary, binary system.

Origin:
1875–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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bi·na·ry   (bī'nə-rē)   
adj.  

  1. Characterized by or consisting of two parts or components; twofold.

  2. Of or relating to a system of numeration having 2 as its base.

  3. Chemistry Consisting of or containing only molecules consisting of two kinds of atoms.

  4. Of or employing two comparatively nontoxic chemicals that combine to produce a deadly poison: binary weapons; a binary nerve gas.

  5. Music Having two sections or subjects.

n.   pl. bi·na·ries
Something that is binary, especially a binary star.

[Middle English binarie, from Late Latin bīnārius, from Latin bīnī, two by two; see dwo- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

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

Anything composed of two parts. In modern computers, information is stored in banks of components that act like switches. Since switches can be either on or off, they have a binary character, and we say that the computer uses “binary arithmetic” to do its work.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

binary 
1460, from L.L. binarius, from bini "two-by-two," from bis "double."
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: bi·na·ry
Pronunciation: 'bI-n&-rE, -"ner-E
Function: adjective
1 : compounded or consisting of or marked by two thingsor parts
2 a : composed of two chemical elements, an element and a radical that acts as an element, or two such radicals b : utilizing two harmless ingredientsthat upon combining form a lethal substance (as a gas)
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

binary bi·na·ry (bī'nə-rē)
adj.

  1. Characterized by or consisting of two parts or components; twofold.

  2. Consisting of or containing only molecules having two kinds of atoms.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Computing Dictionary

binary
1. Base two. A number representation consisting of zeros and ones used by practically all computers because of its ease of implementation using digital electronics and Boolean algebra.
2. binary file.
3. A description of an operator which takes two arguments. See also unary, ternary.
(2005-02-21)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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