| English thesaurus | |||
| |||
| XFS | |||
|
X-Windows : 11 phrases in 9 subjects |
| Astronautics | 1 |
| Building materials | 2 |
| Computer networks | 1 |
| Information technology | 1 |
| Medical appliances | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
| Technology | 1 |
| Telecommunications | 2 |