noun
unary operator; monadic operator
Computing term for an operator that takes a single operand, such as negation or logical NOT.
単項演算子の例として、負号や論理否定がある。
Examples of unary operators include the minus sign and logical NOT.
二項演算子 is a binary operator that takes two operands, while 単項演算子 takes only one.
Compound of 単項 (unary, single term) + 演算子 (operator). A straightforward technical term.