binary Definition

binary
adj

1. Consisting of or containing two parts or elements.

Thesaurus: double, twofold, paired.
2. computing.math.
Denoting a system that consists of two components, especially a number system which uses the digits 0 and 1. See also binary system.

noun binaries

1. A thing made up of two parts.
2. astron.
A binary star.

Etymology: 16c: from Latin binarius, from bini two by two.