I. ˈbīnərē, -ri sometimes -ˌner- adjective
Etymology: Late Latin binarius, from Latin bini two by two + -arius -ary
1. : compounded or consisting of two things or parts : characterized by two : dual , double
2. : composed of two chemical elements, of an element and a radical that acts as an element, or of two such radicals
a binary compound
binary salts
3.
a. : of, relating to, or being a system of numbers having two as its base
b. : involving two variables
a binary form
4. logic : relating two arguments or terms (of functions and propositions)
a binary relation
5.
a. : having two musical subjects or two divisions or sections one complementary to the other
a song in binary form
b. : duple — used of measure or rhythm
II. noun
( -es )
Etymology: Middle English binarie, from Medieval Latin binarius, from Late Latin, consisting of two
: something that is constituted of two figures, things, or parts ; specifically : binary star
III. adjective
1. : involving a choice or condition of two alternatives only (as on-off or yes-no)
2. : involving binary notation
3. : utilizing two harmless ingredients that upon combining form a lethal substance (as a gas)
binary weapon