I. |äpə|rand noun
( -s )
Etymology: Latin operandum, neuter of gerundive of operari to work, operate — more at operate
1. : a quantity upon which a mathematical operation is performed or which arises from an operation
2. logic
a. : something that is operated on by an operator
b. : the scope of an operator
II. noun
( -s )
: the part of a computer instruction that indicates the quantities to be operated on ; also : one of these quantities