Part of an equation

• Either 2 in 2 + 2 = 4, in math
• Divisor, e.g.
• What's acted on in math
• Equation quantity
• Part of an equation, in math
• Target of a mathematical process
• Modus ___

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 ).

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Operand \Op"er*and\, n. [From neuter of L. operandus, gerundive of operari. See Operate .] (Math.) The symbol, quantity, or thing upon which a mathematical operation is performed; -- called also faciend .