"binary" in the noun sense
1. binary star, binary, double star
a system of two stars that revolve around each other under their mutual gravitation
2. binary, binary program
a pre-compiled, pre-linked program that is ready to run under a given operating system a binary for one operating system will not run on a different operating system
"the same source code can be compiled to produce different binaries for different operating systems"
"binary" in the adjective sense
of or pertaining to a number system have 2 as its base
"a binary digit"
consisting of two (units or components or elements or terms
"a binary star is a system in which two stars revolve around each other"
"a binary compound"
"the binary number system has two as its base"
Source: WordNet® (An amazing lexical database of English)
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