| Subject | English | Japanese |
| gen. | reactive power | 無効電力 (mukō-denryoku) |
| el.gen. | reactive power compensation | 無効電力補償 |
| pow.el. | reactive power converter | 無効電力補償装置 |
| el., meas.inst. | reactive power transducer | 無効電力変換器 |
| el.gen. | reactive-power voltage control | 電圧無効電力制御 |
| phys. | three-phase reactive power | 三相無効電力 (さんそう・むこう・でんりょく) |