| Subject | English | Japanese |
| phys. | law of reciprocity | 相互法則 (sōgo-hōsoku) |
| gen. | n principle of reciprocity | 相互主義 (そうごしゅぎ) |
| el., acoust. | reciprocity coefficient | 相反係数 |
| gen. | n reciprocity failure | 相反則不軌 |
| phys. | reciprocity law | 相反則 (そうはんそうく) |
| tech. | reciprocity law | 相反法則 (sōhan-hōsoku) |
| el., acoust. | reciprocity principle | 相反定理 (そうはん・ていり) |
| phys. | n reciprocity theorem | 相反定理 (そうはん・ていり) |
| tech. | reciprocity theorem | 可逆定理 (かぎゃくていり) |
| gen. | n treaty of reciprocity | 互恵条約 |