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binary system

noun
1.
a system involving only two elements, as 0 and 1 or yes and no.
2.
Mathematics. a system of counting or measurement whose units are powers of two.
Compare binary (def 2a).
3.
Astronomy, binary star.
Also called dyadic system (for defs 1, 2).
Origin
1825-1835
1825-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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11
12
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