Definition of "unary" [unary]

• Consisting of or involving a single element or component. (adjective)
• Of an operation, function, procedure, or logic gate, taking exactly one operand, argument, parameter, or input; having domain of dimension 1. (adjective)
• The unary numeral system; the bijective base-1 numeral system. (noun)
• Unary coding, an entropy encoding for natural numbers. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "You get one guess as to what the unary influence resulting in this policy is."
• "Three unary propositional functions are defined, one corresponding to classical negation, as well as seven binary functions, including classical disjunction, conjunction and equivalence."
• "For example, if a unary function is considered as a set of ordered pairs, then the domain and codomain are given by the first and second projections, respectively."