noun
Computing term for the data or value that an operation acts upon.
加算命令では、二つの演算対象が必要です。
An addition instruction requires two operands.
演算子 is the operator (e.g., +, -), while 演算対象 is the operand (the value being operated on).
Compound of 演算 (operation, calculation) and 対象 (target, object). A straightforward technical term.