- a number system having a base of two, numbers being expressed by sequences of the digits 0 and 1: used in computing, as 0 and 1 can be represented electrically as off and on
WordReference Random House Unabridged Dictionary of American English © 2026
bi′nary sys′tem,
- Mathematicsa system involving only two elements, as 0 and 1 or yes and no.
- Mathematicsa system of counting or measurement whose units are powers of two. Cf. binary (def. 2a).
- AstronomySee binary star. Also called dyadic system (for defs. 1, 2).
- 1825–35
Collins Concise English Dictionary © HarperCollins Publishers::
binary notation, binary system n
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'binary system' also found in these entries (note: many are not synonyms or translations):
base
- binary notation
- nova
- apastron
- binary
- binary pulsar
- binary star
- contact binary
- Cygnus X-1
- dyadic system
- eclipsing variable
- periastron
- runaway star
- system
