[bi.na.ry] n, pl -ries (15c): something made of or based on two things or parts: as a: binary star b: a binary number system
[2]binary adj [LL binarius, fr. L bini] (1597) 1: compounded or consisting of or marked by two things or parts
2. a: duple--used of measure or rhythm b: having two musical subjects or two complementary sections 3 a: relating to, being, or belonging to a system of numbers having
2. as its base "the ~ digits 0 and 1" b: involving a choice or condition of two alternatives (as on-off or yes-no)
4. a: composed of two chemical elements, an element and a radical that acts as an element, or two such radicals b: utilizing two harmless ingredients that upon combining form a lethal substance (as a gas) "~ weapon"
5: relating two logical or mathematical elements "~ operation"