operand

[op-uh-rand] /ˈɒp əˌrænd/
noun, Mathematics
1.
a quantity upon which a mathematical operation is performed.
Origin
1885-90; < Late Latin operandum, gerund of operārī; see operate
British Dictionary definitions for operands

operand

/ˈɒpəˌrænd/
noun
1.
a quantity or function upon which a mathematical or logical operation is performed
Word Origin
C19: from Latin operandum (something) to be worked upon, from operārī to work
Word Origin and History for operands

operand

n.

1886, from Latin operandum, neuter gerundive of operari (see operation).