| Subject | English | Japanese |
| radiol. | disintegration constant | 崩壊定数 (hōkai-teisū) |
| radiol. | disintegration constant | 減衰定数 (gensui-teisū) |
| phys. | disintegration constant | 壊変定数 (kaihen-teisū) |
| phys. | disintegration electron | 壊変電子 (かいへん・でんし) |
| phys. | disintegration energy | 壊変エネルギー (kaihen-enerugī) |
| gen. | n disintegration of a cell nucleus | 核崩壊 (かくほうかい) |
| gen. | n disintegration per minute | 壊変毎分 |
| gen. | disintegration per second | 崩壊原子数/秒 |
| tech. | disintegration rate | 壊変数 (かいへんすう) |
| tech. | disintegration series | 壊変系列 (of radioactive elements, かいへんけいれつ) |