Of two kinds.
Twofold, double.
A wallet, billfold, or carrying case with a single fold, so that it opens like a book.
A door, window, shutter, or divider consisting of two equal panels hinged together so that it opens by folding the panels against each other.
A sheet of paper or cardboard folded in half along a crease down the center.
A crease or turn that causes something to double back on itself.
Having two equally important parts; related to something with two parts.
Of an operation, function, procedure, or logic gate, taking exactly two operands, arguments, parameters, or inputs; having domain of dimension 2.
Focusing on two mutually exclusive conditions.
Concerning logic whose subject matter concerns binary states.
Being in one of two mutually exclusive states.
Of data, consisting coded values (e.g. machine code) not interpretable as plain or ASCII text (e.g. source code).
Concerning numbers and calculations using the binary number system.
Synonym of binary asteroid.
Synonym of binary star.
Synonym of binary file; a file consisting of data other than human-readable text.
Synonym of binary planet.
The bijective base-2 numeral system, which uses only the digits 0 and 1.
A state in which only two values are possible, in which something must have one value or the other.