noun
unary operation; monadic operation
A computing term for an operation that takes a single operand, such as negation or logical NOT.
単項演算の例として、数値の符号を反転する単項マイナスがある。
An example of a unary operation is the unary minus, which flips the sign of a number.
二項演算 is a binary operation taking two operands, while 単項演算 takes only one.
Compound of 単項 (single term) and 演算 (operation), a straightforward technical term.