Traditionally, alliances have equated to binary public-private partnerships.
Many stars are in binary systems, locked in mutual orbit with another star.
The final act offers a binary choice: love or hate, forgiveness or vengeance, truth or consequences.
And there is an absolute, binary difference between that tiny drop of knowledge or insight, and nothing.
And this, in turn, reinforced the religious vision of a God-given binary.
In addition to the two elements present in binary acids, the great majority of acids also contain oxygen.
Antares is probably a binary, although its binary character has not yet been established.
Contrast the binary compounds as a class with the quaternary compounds as a class.
Each pair is apparently a binary; but the period of revolution is unknown.
It is only in the case of binary systems that we can discover the masses of stars at all.
"dual," mid-15c., from Late Latin binarius "consisting of two," from bini "twofold, two apiece, two-by-two" (used especially of matched things), from bis "double" (see bis-). Binary code in computer terminology was in use by 1952, though the idea itself is ancient. Binary star in astronomy is from 1802.
binary bi·na·ry (bī'nə-rē)
Characterized by or consisting of two parts or components; twofold.
Consisting of or containing only molecules having two kinds of atoms.
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.