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| tunnel | |||
| tunnel A underground passageway, especially one for trains or cars that passes under a mountain, river or a congested urban area | |||
| conduit | |||
| σήραγγα: 116 phrases in 17 subjects |
| Agriculture | 15 |
| Chemistry | 1 |
| Communications | 9 |
| Construction | 6 |
| Earth sciences | 29 |
| Electronics | 2 |
| Fish farming pisciculture | 2 |
| General | 1 |
| Industry | 2 |
| Life sciences | 1 |
| Materials science | 6 |
| Medical | 3 |
| Metallurgy | 3 |
| Natural sciences | 8 |
| Religion | 1 |
| Technology | 3 |
| Transport | 24 |