Definition of "unary"

Her work is a renunciation of the old narrative, a throwing away of the cotton reel, an enunciation of the unary signifier, fort, that is meaningless in itself.

1995, Becky McLaughlin, “Perverse Pleasure and Fetishized Text: The Deathly Erotics of Carter’s ‘The Bloody Chamber’”, in Style, volume 29, number 3, page 219

Zadeh’s claim is that if the meaning of an expression (X) can be modeling by a fuzzy membership function variable, then the meaning of an expression such as “very X” is simply a membership function over the same variable determined by applying a unary operator to the membership function for X.

1990, Dominic A. Clark, “Verbal uncertainty expressions: A critical review of two decades of research”, in Current Psychology, volume 9, number 3, page 229

On the other hand, blank spaces should not be used for unary operators such as unary minus (−), address of (&), indirection (*), member access (.), increment (++), and decrement (−−).

2011, Robert Green, Henry Ledgard, “Coding Guidelines: Finding the Art in the Science”, in Communications of the ACM‎, volume 54, number 12