| Subject | English | Japanese |
| comp., MS | binary operator (An operator involved in a binary operation | 2 項演算子 |
| comp., MS | main operator extension | 代表電話オペレーター内線 (The extension at which Attendant console users who are answering calls for the corporate main phone number can be reached internally) |
| comp., MS | mobile operator app | 通信事業者アプリ (A privileged app that enables a mobile operator to build an account experience that links their SIM to the Connection Manager under Mobile Broadband connections) |
| tech. | multi-operator welding machine | 複式溶接機 (fukushiki-yōsetsuki) |
| comp. | n non-operator mode | 無人モード |
| telecom. | operator call-in signal | オペレータ割り込み信号 |
| phys. | operator homomorphism | 作用準同形 (sayō-jundōkei) |
| gen. | n operator in a telemarketing business | コミュニケータ |
| gen. | n operator in a telemarketing business | コミュニケーター |
| phys. | operator isomorphism | 作用同形 (sayō-dōkei) |
| comp., MS | operator-loaded TP | オペレーター起動のTP (An invokable transaction program (TP) that is manually loaded and started by an operator) |
| gen. | n operator method | 演算子法 (enzanshihō) |
| gen. | operator of a mine | 山下 |
| gen. | operator of a mine | 山本 |
| gen. | operator of a mine | 山元 news2 nf30 |
| gen. | n operator of multiple cable or direct-broadcast satellite television systems | 統括運営会社 |
| comp., MS | operator overloading | 演算子のオーバーロード (The assignment of more than one function to a particular operator, with the implication that the operation performed will vary depending on the data type (operands) involved. Some languages, such as Ada and C++, specifically allow for operator overloading) |
| comp., MS | operator procedure | 演算子プロシージャ (A series of Visual Basic statements that define the behavior of a standard operator (such as *, <> or And) on a class or structure you have defined. This is also called operator overloading) |
| telecom. | operator recall signal | オペレータ再呼び出し信号 |
| phys. | operator ring | 作用素環 (さようそ・かん) |
| phys. | operator ring | 演算子環 (enzanshikan) |
| nucl.phys. | operator support system | 運転員支援システム |
| comp., MS | Report Operator user role | レポート オペレーター のユーザー ロール (In System Center Operations Manager 2007, the user role that grants members the rights to access and run reports. Because Virtual Machine Manager reports are created through Operations Manager, Virtual Machine Manager administrators must be a member of the Report Operator user role to view and run reports in the Virtual Machine Manager Administrator Console) |