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| selenium | |||
| selenium A highly toxic, nonmetallic element; used in analytical chemistry, metallurgy, and photoelectric cells | |||
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selenium : 24 do fraz, 9 tematyki |
| Anteny i falowody | 1 |
| Budownictwo | 1 |
| Chemia | 12 |
| Elektronika | 3 |
| Kulturoznawstwo | 1 |
| Medycyna | 3 |
| Pospolicie | 1 |
| Przemysł | 1 |
| Rolnictwo | 1 |