Modus ___

• Divisor, e.g.
• Target of a mathematical process
• What's acted on in math
• Quantity on which a math operation is performed
• Equation quantity
• A quantity upon which a mathematical operation is performed
• Either 2 in 2 + 2 = 4, in math
• Dividend, mathematically

Wiktionary Word definitions in Wiktionary
n. (context mathematics computing English) A quantity to which an operator is applied (in 3 - x , the operands of the subtraction operator are 3 and x ).