| |||
| persistent | |||
| persisting (persistens); persistent (persistens) | |||
|
persistent : 34 phrases in 8 subjects |
| Chemistry | 3 |
| Communications | 6 |
| Energy industry | 1 |
| Environment | 16 |
| Information technology | 4 |
| Medical | 1 |
| Natural resourses and wildlife conservation | 1 |
| Statistics | 2 |