Meaning of BINARY in English

BINARY

/ ˈbaɪnəri; NAmE / adjective

1.

( computing , mathematics ) using only 0 and 1 as a system of numbers :

the binary system

binary arithmetic

2.

( technical ) based on only two numbers; consisting of two parts :

binary code / numbers

—compare unary

►  bin·ary noun [ U ]:

The computer performs calculations in binary and converts the results to decimal.

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WORD ORIGIN

late Middle English (in the sense duality, a pair ): from late Latin binarius , from bini two together.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.