See more synonyms on Thesaurus.com
- a system involving only two elements, as 0 and 1 or yes and no.
- Mathematics. a system of counting or measurement whose units are powers of two.Compare binary(def 2a).
- Astronomy. binary star.
Origin of binary system
First recorded in 1825–35
Also called dyadic system (for defs 1, 2).
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018