op·er·and
noun/ˈɒpərænd/
/ˈɑːpərænd/
(mathematics)- the number on which an operation is to be done
操作数;运算对象 Word Originlate 19th cent.: from Latin operandum, neuter gerundive of operari ‘expend labour on’, from opus, oper- ‘work’.
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