adj

• (logic) Concerning logic whose subject matter concerns such states.
  "Near-synonym: Boolean"
• (arithmetic, computing) Concerning numbers and calculations using the binary number system.
• (mathematics, programming, computer engineering) Of an operation, function, procedure, or logic gate, taking exactly two operands, arguments, parameters, or inputs; having domain of dimension 2.
  "Division of reals is a binary operation."
• (computing) Of data, consisting coded values (e.g. machine code) not interpretable as plain or ASCII text (e.g. source code).
  "He downloaded the binary distribution for Linux, then burned it to DVD."

noun

• (mathematics, computing, uncountable) The bijective base-2 numeral system, which uses only the digits 0 and 1.
  "As our initial exposure to the base 10 number system consisted of learning how to count, it also makes sense that we might begin by learning how to count in binary."
• (computing) Synonym of binary file.
  "Now that you have a high-level idea of what binaries look like and how they work, you're ready to dive into a real binary format."
• (astronomy) Synonym of binary asteroid.
• (astronomy) Synonym of binary planet.