1. consisting of or involving a single element or component
Usage: mathematics; computer science
2. requiring only one operand or argument
Usage: mathematics; computer science

Examples

• The unary operator negates a single value.
• In mathematics, the minus sign can function as a unary operator.
• The function takes a unary argument and returns its square root.
• Unary operations are simpler than binary operations.
• The programming language supports both unary and binary expressions.
• A unary relation connects elements within a single set.