Meaning of BINARY in English

BINARY

[ 'bʌɪnəri ]

■ adjective

1》 composed of or involving two things.

2》 using or denoting a system of numerical notation with two as its base, employing the digits 0 and 1.

■ noun ( plural binaries )

1》 the ~ system of notation.

2》 Astronomy a system of two stars revolving round their common centre.

Origin

ME (in the sense 'duality, a pair'): from late L. binarius , from bini 'two together'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.