| Subject | English | Japanese |
| light. | amplitude of fluctuation of the luminous flux of a source run on alternating current | 光束変動の大きさ |
| gen. | amplitude of the tide | 潮の振幅 |
| tech. | amplitude of vibration | 振動振幅 (しんどう・しんぷく) |
| tech. | eastern amplitude of the sun | 日出幅角 (ひのでふっかく) |
| el., meas.inst. | envelope of an amplitude modulated signal | 振幅変調信号の包絡線 |
| tech. | western amplitude of the sun | 日没幅角 (にちぽつふっかく) |