operand

from WordNet (r) 3.0 (2006)

operand
    n 1: a quantity upon which a mathematical operation is performed

from The Collaborative International Dictionary of English v.0.48

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}.
   [1913 Webster]

from The Free On-line Dictionary of Computing (8 July 2008)

operand

   <programming> An {argument} of an {operator} or of a {machine
   language} instruction.

   (1995-08-18)

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